00393nam a2200097Ia 4500008004100000040004400041245007700085260001900162300001000181500010400191180412s9999||||xx |||||||||||||| ||und||  aAhmadu Bello University Library - Zaria 0aBibliography on Copper in Soil, 1968-1966.cCOMMONWEALTH BUREAU OF SOILS  bHarendenc1972  app.23  aBibliography on copper in soil, 1968-1966. (Annotated bibliography no. 1536) Harpenden, 1972. pp.23