000 00346pam a2200145a 44500
008 160408b1974 xxu||||| |||| 00| 0 eng d
082 _a628.53
_bP419
100 _aPerkins, Henry C.
245 1 _aAIR POLLUTION
260 _aN. Y.
_bMcgraw-Hill
_c1974
300 _a407
650 _aAir -- Pollution
964 _gCIRC
997 _aA31929 C
999 _c240049
_d240049