Soils and soil fertility. (5th ed.)
Troeh, Frederick R
Soils and soil fertility. (5th ed.) - 5th ed. - New York: Oxford University Press 1993 - vi, 462 p. : ill.
0195083288
SOIL FERTILITY--ZAMBIA
SOILS
SOIL MANAGEMENT--ZAMBIA
S 591 Tro
Soils and soil fertility. (5th ed.) - 5th ed. - New York: Oxford University Press 1993 - vi, 462 p. : ill.
0195083288
SOIL FERTILITY--ZAMBIA
SOILS
SOIL MANAGEMENT--ZAMBIA
S 591 Tro