Title: Soperniki orlov /
Authors: Koroleva, E. V.; Rudnik, V. A.
Date: 1974
Publisher: Mai︠a︡k,
Physical description: 222 p. : ill. ; 21 cm.
Language: Russian
LC classification: T
Subject headings (LCSH): Aeronautics--Russia--History.; Aeronautics--Soviet Union--History; Air pilots--Soviet Union--Biography; Efimov, Mikhail Nikiforovich, 1881-1920.