000 00258nam a2200097 4500
999 _c336287
_d336287
082 _a333.7 ENG
_bVAL.E
100 _aValdiya,K.S.
245 _aEnvironmental geology :Indian context
_cValdiya,K.S.
260 _aNew Delhi
_c1987
_bTata Mc Graw Hill
942 _cBK