000 00315nam a22001217a 4500
020 _a9789350562635
082 _a628
_bBHA.E
100 _aPawan Kumar Bharti
245 _aEnvironmental health and problems
260 _aNew Delhi
_bDiscovery publishing house
_c2013
650 _aEnvironmental health
942 _cBK
999 _c199943
_d199943