TY  - BOOK
AU  - Blank, F. C.  
TI  - Essential aspects of agricultural crop production/ 
U1  - 633/ DAF 22
PY  - 1999///
CY  - New Delhi, India : 
PB  - Allied scientific publisers, ; 
KW  - Crop production.
KW  - Agricultural aspects.
KW  - Essential aspects.
UR  - http://books.google.com.bd/books?id=AOtDPgAACAAJ&dq=Essential+aspects+of+crop+production&hl=en&sa=X&ei=Xh50VJCtLs-eugT1koGACw&ved=0CB0Q6AEwAA
ER  -