na INLIS000000000011053 Ind 0010-1118011053 A Text-book of West African Agriculture soils and crops IRVINE, F.R. F.R. Irvine 2 nd ed London Oxford University Press 1956 vi, 367 p.: ill.; 21 cm. vi, 367 p.: ill.; 21 cm. 631.4IRVt 631.4 SOILS CROPS WEST AFRICA 2 nd ed 753/73