000 00407nam a2200145Ia 4500
008 211231s9999 xx 000 0 und d
020 _a81-8318-060-4
040 _cJayakar Knowledge Resource Centre
100 _aChatwal, G R And Sharma , H
245 0 _aText book of environmental studies.
250 _a1st
260 _bHIMALAYA PUBLISHSING HOUSE
_aMumbai
_c2004
300 _av,459p p.
942 _c1
999 _c283940
_d283940