000 00511nam a22001937a 4500
999 _c21033
_d21033
003 OSt
008 190404b ||||| |||| 00| 0 eng d
020 _a9788178806655
082 _a363.7
_bR16T
100 _aRam, Kalu.
245 _aTextbook of Environmental Science
260 _aNew Delhi
_bRajat Publications
_c2015
300 _aix,275p.
650 _aSocial Sciences
650 _aSocial Problems and Services
650 _aEnvironmental Science
700 _aSharma, Sandeep.
942 _2ddc
_cBK
_01