000 00326nam a2200121Ia 4500
008 170101s1991 xx 000 0 und d
082 _a631.4 ISS
100 _aIndian Socity of Soil Science
245 0 _aSoil related constraints in crop production
260 _aNew Delhi
_bISSS
_c1991
300 _a176p.
942 _2ddc
_cBK
999 _c328731
_d328731