004840000a22002050004500650002900000650001800029650001600047650001200063650002500075082002200100518001100122530000600133100002000139245004600159020001800205260002500223260000900248041000800257300001300265  aEnvironmental Management  aAir pollution  aAir quality  aEcology  aEnvironmental policy  a363.7392bB47scT  a970723  aM  aBibbero, Robert  aSystems approach to air pollution control  a0-471-07205-2  aNew YorkbJohn Wiley  c1974  aEng  axi,531p.