302 p., [4] folded p. of plates : ill., maps ; 22 cm.
Notes
Title on added t.p.: The Russian chernozem--100 years after Dokuchaev.
On p. preceding t.p.: Akademi︠i︡a nauk SSSR. Nauchnyĭ sovet po problemam pochvovedeni︠i︡a i meliora︠t︡sii pochv. Institut pochvovedeni︠i︡a i fotosinteza.