In the services of nine popes
Subtitle: 100 years of the Vatican Observatory
By: Sabino Maffeo ; translation by George V. Coyne.
Publisher: Vatican Observatory (Specola Vaticana)
Published: 1991
Place of publication: Vatican City State
Language: eng
Number of pages: 241
Work titles: Nove papi, una missione, cento anni della Specola Vaticana.