Vechnye kalendari.
Contributors: Zelikson, M. S.,
Publisher: "Nauka"
Published: 1969
Place of publication: Moskva
Language: rus
Number of pages: 120
Subjects: Perpetual calendars.
Notes: At head of title: A.V. Butkevich, M.S. Zelikson.

On leaf preceding t.p.: Akademii︠a︡ nauk SSSR.  Vsesoi︠u︡znoe astronomo-geodezicheskoe obshchestvo.

Bibliography: p. 114-[117]