00572nam a2200169Ia 4500001001000000003000500010008004100015010001100056040000900067082001800076100002500094245014300119260007400262300001100336440002700347650002800374Para_2699CHAP220125s1977    xx            000 0 und d  a201193  cCHAP  aPA 632.95 F34  aFairchild, Edward J.  aAgricultural chemicals and pesticides :b a subfile of the niosh registry of toxic effects of chemical substances  /c Edward J. Fairchild  aCincinnati, Ohio  :b Department of Health, education and and Welfare  a227 p.  aObew (NIOsH),  77-180)  aPesticidas x Toxicidad