63 | Proc | Proceedings and papers of the second International congress of soil science [Текст] = Труды 2 международного конгресса почвоведов : Leningrad- Moscow, USSR. July 20-31, 1930. Commisiion II Soil chemistry / Ed. by Prof. K.K. Gedroiz and D.L. Askinazy. — Moscow : State publ. house of agricult. literature selkolkhozgis, 1933. — 226 p. |
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