000 00236nam a2200109Ia 4500
100 _aAgarwal, A & Narayan, S(ed)
942 _cBK
245 _aHarara Paryavaran
260 _aNew Delhi
_c1988
082 _aH 333.7 Aga/Nar
300 _a280
999 _c68324
_d68324