000 00245nam a22001097a 4500
082 _a658.4095
100 _aNAIR KGC, DIPA, YOHANNAN.
245 _aSYSTEMATIC APPROACH TO ENVIRONMENTAL STUDIES
260 _bCHAND
300 _b5.25
942 _cBK
999 _c7344
_d7344