On the island of Wrangel

Luhta, Ed.On the island of Wrangel: Northern air expedition: dedicated.Polar pilot O.A.Calvitsa, who was tragically killed in distant Yakutia in the winter of 1929 / Ed.Luhta, Nick.Bobrov.- 2nd ed., Sokr.-Moscow ;Leningrad: State.Textbook.Publishing House, 1932. -72 p.: il., maps .. -5000 copies..I. Bobrov, nickname .. II.Kalvitsa, O.A ..Electronic copy source: PB