Pochvennye resursy selʹskokhoz︠i︡aĭstvennogo naznacheni︠i︡a : Vostochna︠i︡a Sibirʹ i Dalʹniĭ Vostok - Kovalev, Roman Viktorovich; Volkovin︠t︡ser, V. I. (Vladimir Isaakovich) ("Nauka," Sibirskoe otd-nie, 1989)