Soil-geographical zoning of the U. S. S. R.
Research on problems of development and distribution of agri
Soil-geographical zoning of the U. S. S. R. - Jerusalem 1963 - 480p
631.404 7 R98S
Soil-geographical zoning of the U. S. S. R. - Jerusalem 1963 - 480p
631.404 7 R98S