00311nam a2200109 a 450000500170000002000150001708200180003210000190005024500550006926000510012430000260017520251203091244.0  a0582014646  a574.5222bWEL  aWellburn, Alan  aAir Pollution and Acid RainbThe Biological Impact  aNew YorkbLongman Scientific & Technicalc1988  axiii,274p.c20 cm. HB