TY  - BOOK
AU  - Craswell, E. T.Simpson, J.
TI  - Soil fertility and climatic constraints in dryland agriculture  
SN  - 186320122X
PY  - 1994///
CY  - Canberra
PB  - Australian Centre for International Agricultural Research
KW  - Soil FertilitySoil ImprovementSoil Sciences
N1  - Proceedings of ACIAR/SACCAR workshop held at Harare, Zimbabwe
ER  -