TY  - BOOK
AU  - 
TI  - Soil sampling and sample preparation
AV  - S 592.16 P41
PY  - 1995///
CY  - Ibadan
PB  - International institute of Tropical Agriculture
KW  -  
KW  -  Including soil surveys, soil chemistry, soil structure, 	
KW  - soil-plant relationships
ER  -