TY  - BOOK
AU  - Singh, Aditya Kumar 	
AU  - Singh, Ram Sakal
TI  - Soil suitability for crop productivity /			
U1  - 631.4 SIN 
PY  - 2009///
CY  - India : 
PB  - Agrotech Publishing Academy,	
N1  - Includes Index
ER  -