00301nam a2200109 a 450000500170000002000150001708200190003210000360005124500520008726000330013930000190017220251203091658.0  a0716723344  a551.6,bD, gra  aGraedel, T.E., Crutzen, Paul J.  aAtmospheric change: an earth system perspective  aNew YorkbW.H. Freemanc1992  axiv,446p, 24cm