Question: Merchanter's Luck is by the author who has written more than how many books?

Context paragraphs:
John M. Merriman: John Mustard Merriman (born 1946) is a Charles Seymour Professor of History at Yale University.  He is the author of many books including his most well known "A History of Modern Europe since the Renaissance" (1996 & 2002), a popular survey text for undergraduate history classes at many American universities and colleges.  Merriman was born and raised in Oregon where he attended a Jesuit all-boys high-school, although he does not consider himself religious.  His favorite music is The Rolling Stones, "[I’ve] never written a thing without a record on."  Merriman formed many of his current political views during the volatile Vietnam years; he still describes himself as "virulently anti-establishment".  His recent books include "The Dynamite Club: How a Bombing in the Fin-De-Siecle Paris Ignited The Age of Modern Terror" (2009) about the French Anarchist Emile Henry (1872-1894), and "Massacre: The Life and Death of the Paris Commune" (2014) focusing on the Paris Commune of 1871, particularly on "The Bloody Week".

Tripoint (novel): Tripoint is a science fiction novel by the United States science fiction and fantasy author C. J. Cherryh, first published by Warner Books in September 1994.  It is one of Cherryh's Merchanter novels and is set in the author's Alliance-Union universe.

C. J. Cherryh: Carolyn Janice Cherry (born September 1, 1942), better known by the pen name C. J. Cherryh, is an American writer of speculative fiction.  She has written more than 60 books since the mid-1970s, including the Hugo Award-winning novels "Downbelow Station" (1981) and "Cyteen" (1988), both set in her Alliance-Union universe.  She is known for "world building," depicting fictional realms with great realism supported by vast research in history, language, psychology, and archeology.  Her series of fantasy novels set in the Alliance-Union universe, the Morgaine Stories, have sold in excess of 3 million copies.

Fr. Bobby Jose Kattikad: Fr.  Bobby Jose Kattikad popularly known as 'Bobbyachan' or 'Fr.  Bobby Jose Capuchin' is a Roman Catholic priest from Order of Friars Minor Capuchin in India, known for his preaching and especially evangelization through television, radio and other media.  He founded Theo Publications in 2002, which publishes many books related to spirituality.  Fr.  Bobby is also author for many books which gained popularity around spirituality of malayalam speaking world.  The television preaching programs called Gurucharanam in Shalom TV India and many other programs are led by him.  Those programs are reported to have large number of viewers.  He also leads growth retreats which is conducted all over the world among Malayali communities.  For a long time, he was associated with conducting growth retreats in San Pio retreat centre, Kovilthottam, Kollam.  Fr.  Bobby was appointed as the first director and guardian of the retreat center.  He is an editor and contributor for a magazine called Theo Manushyasnehi.

Roger Manvell: Arnold Roger Manvell (10 October 1909 – 30 November 1987) was the first director of the British Film Academy (a post he filled for over a decade), author of many books on films and film-making, and authored and co-authored (with Heinrich Fraenkel) many books on Nazi Germany, including biographies of Adolf Hitler, Rudolf Hess, Heinrich Himmler, Joseph Goebbels and Hermann Göring.  During World War II he worked in the Ministry of Information, creating propaganda films for the British government.  In his career, he also lectured in universities in as many as forty countries in three continents (America, Europe and the Middle East), and made a name as a broadcaster and screenwriter.  He joined the Boston University faculty in 1975 teaching film history classes at the College of Communications.  Manvell was named University Professor in 1982.

Finity's End: Finity's End is a science fiction novel written by the American science fiction and fantasy author C. J. Cherryh.  It is one of Cherryh's Merchanter novels, set in her Alliance-Union universe, in which humanity has split into three major power blocs: Union, the Merchanter's Alliance and Earth.  "Finity's End" was shortlisted for a Locus Award in 1998.

Merchanter's Luck: Merchanter's Luck is a science fiction novel by American writer C. J. Cherryh.  It is set in the author's Alliance-Union universe, in which humanity has split into three major power blocs: Union, the Merchanter's Alliance and Earth.  In the context of the Alliance-Union universe, the book is one of Cherryh's Merchanter novels.

Chelangatt Gopalakrishnan: Chelangatt Gopalakrishnan (June 6, 1932 - June 4, 2010) was born in Cherthala Alappuzha dist.  in Kerala to Sri Nediyedathu Kesava Pillai and Thrikkeparambil Ammukkutti Amma.  After graduation, he started his career as a journalist in a regional newspaper; Malayali.  Later he worked for some other newspapers including Mathrubhumi.  During this time, he established his own name in the film journalism.  Several forgotten personalities including J.C. Daniel, the father of Malayalam Cinema, have been disclosed before readers and public by him.  During this time he had released several books.  Most of them are about cinema and its history.  The historical narrations of cinema have been started from the birth of world cinema till the contemporary Malayalam films.  The renowned Malayalam Film Maker Adoor Gopalakrishnan in his book Cinemayude Lokam, which won many awards including the award from Government of India says ; "The history of Malayalam Cinema is not started with stars born with fortunes, from sky.  But, it is the tearful story of some, who experimented with their lives and assets.  Most of the experiments had been tragedies.  We got that history from the articles written by Chelangatt Gopalakrishnan.  S. Guptan Nair called Chelangatt Gopalakrishnan, the Chief Architect of Malayalam Film Literature and Journalism.  He was in the Kerala State Film Awards Jury for several years.  Many books related with novel, biographies, history and technical aspects of film making have been written by him.  He had run a film studio named 'Ajanta Studio' at Aluva.  Many classical films including 'Olavum Theeravum' written by M.T. Vasudevan Nair have been filimized at this studio.  He had written more than 20 books about cinema alone.  Vincent Muthal Vincent Vare, Mukhathodu Mukham, The History of World Cinema, The History of Indian Cinema, The History of Malayalam Cinema, The History of Film Persons in Kerala, The History of Malayalam Journalism etc., are few among them.  He was a regular writer about many of the prominent periodicals in Malayalam language.

The Merchanter novels: The Merchanter novels are several loosely connected novels by science fiction and fantasy author C. J. Cherryh set in her Alliance-Union universe.  These science fiction novels explore her merchanter subculture: the extended families that own and operate the ships that supply goods, transportation, news and trade to the various worlds and space stations in the human Earth, Alliance and Union space.  The novels are related by a common setting and theme – a misfit (made so by circumstance) who finds his or her proper home – rather than plot and character; none of the books is a direct sequel of another in the conventional sense.

Piare Lal Sharma: Piare Lal Sharma (1902–2006) was a renowned author from India, author of several books including "India Betrayed".  Among the many books written by this author, following are very well known:

Supporting paragraphs: Merchanter's Luck C. J. Cherryh
Answer: 60