BEAR, FIRMAN E
CHEMISTRY OF THE SOIL - 2 - NEW DELHI, OXFORD & IBH 1964 - pages 515
CHEMICAL COMPOSITION OF SOILS
FACTORS OF SOIL FORMATION
PHYSICAL CHEMISTRY OF SOILS
631.41 BEA/CH
CHEMISTRY OF THE SOIL - 2 - NEW DELHI, OXFORD & IBH 1964 - pages 515
CHEMICAL COMPOSITION OF SOILS
FACTORS OF SOIL FORMATION
PHYSICAL CHEMISTRY OF SOILS
631.41 BEA/CH