00660nam a22002051a 4500 1/14603 990609s1980 enk 1 eng d 039442350X 15089 DLC GR-PeUP 301.3 CO Commoner, Barry. The Closing circle : nature, man, and technology / Barry Commoner New York : Alfred A. Knopf , 1980 x, 326 p. ; 22 cm. Includes index Nature Effect of human beings on. Pollution. INST UNIPILB MAIN 20040709 301.3 CO 00131049 00131049 LOAN 0 1 /webopac/covers/01/15089_039442350X.jpg