Title: Ptitsy /
Authors: Buturlin, S. A. 1872-1938.; Formozova, A. N.; Zhitkov, B. M. 1872-1943.
Publisher: Tsentralnyi komitet Vsesoyuznogo Leninskogo Kommunisticheskogo Soiuza Molodezhi Izdatel'stvo Detskoi Literatury,
Year: 1940
Subjects: Birds Soviet Union.; Birds; Soviet Union