000 00353nam a2200145Ia 4500
008 140317s9999 xx 000 0 und d
082 _a574.52
100 _aRam Prakash
245 _aMan,Science and Environment.
260 _aNew Delhi
_bAshish Pub.
_c1993
300 _a334
653 _aMan,Sci. , Env.
653 _aEnvironment
942 _2ddc
_cBK
999 _c12709
_d12709