Vechnye kalendari
By: A.V. Butkevich, M.S. Zelikson.
Contributors: Zelikson, M. S.
Publisher: "Nauka"
Published: 1969
Place of publication: Moskva
Language: rus
Number of pages: 120
Subjects: Perpetual calendars.
Notes: Bibliography: p. 114-[117].
On leaf preceding t.p.: Akademii͡a︡ nauk SSSR. Vsesoi͡u︡znoe astronomo-geodezicheskoe obshchestvo.