00394nam a2200097Ia 4500 180412s9999||||xx |||||||||||||| ||und|| Ahmadu Bello University Library - Zaria Bibliography on Copper in Soil, 1971-1969. COMMONWEALTH BUREAU OF SOILS Harpenden 1972 pp.19 Bibliography on copper in soil, 1971-1969. (Annotated bibliography no. 1535) Harpenden, 1972. pp.19 4737 4737