TY  - BOOK
ED  - Food and Agriculture Organisation of the United Nations
TI  - Improving soil fertility in Africa: : papers presented at the third conference on soil fertility and fertilizer use in Africa, Addis Ababa, Ethiopia 3-7 Nov. 1970
T2  - Soil bulletin; 14
AV  - IRA S604.83.A35F6 
PY  - 1971///
CY  - Rome
PB  - FAO
KW  - Soil ferilizer
KW  - Africa,
KW  - Congresses
N1  - Includes bibliographical references
ER  -