000 00322 a2200121 4500
020 _a9789352695461
084 _2Colon Classification
_aH:(G:55-527)
100 _aNandita Singh
245 _aEarth resources and environmental issues
260 _bRandom Publications
_c2020
_aNew Delhi
300 _a297p.
942 _cGEN
999 _c194923
_d194923