000 00376nam a2200157Ia 4500
001 20804
008 240126s9999||||xx |||||||||||||| ||und||
082 _a636.7 GUR
100 _aSingh, Gurcharan
_914278
245 0 _aTopics and terms in environmental science
260 _aNew Delhi
260 _bCommon Wealth Publishers
260 _c1992
300 _a2V
942 _cBK
999 _c20804
_d20804