00393nam a2200097Ia 4500 180412s9999||||xx |||||||||||||| ||und|| Ahmadu Bello University Library - Zaria Bibliography on Copper in Soil, 1968-1966. COMMONWEALTH BUREAU OF SOILS Harenden 1972 pp.23 Bibliography on copper in soil, 1968-1966. (Annotated bibliography no. 1536) Harpenden, 1972. pp.23 4876 4876