000 00381nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a631.5
_bW629
100 _aWhyte R O
245 _aCrop production and environment
260 _aLondon
_bFaber and Faber
_c1960
300 _a392p.
650 _aCrop production
942 _cBK
999 _c43997
_d43997