silent spring

acres agents Agriculture aldrin animals applied areas arsenic become biological control birds body cancer carcinogens cause cells cent Chem chemicals chlordane chlorinated hydrocarbons chromosomes contained crops damage dead death destruction developed dieldrin Drug Administration Dutch elm Dutch elm disease effect eggs endrin Entomol entomologists environment experience exposure fact farmers feeding field fire fire ant fish flies Florida Food and Drug forests gypsy moth hazard heptachlor herbicides human important insect control insecticides Japanese beetle Jour killed laboratory lake larvae lethal lindane liver livestock living malathion malignant methoxychlor million Miramichi mosquitoes nature nests normal organic phosphates oxidation Pages parasites parathion pesticides Pests plants poison pollution populations pounds problem Proc produce Public Health radiation reported residues resistance river robins sage salmon secticides soil species spraying sterile streams tests tion tissues toxaphene toxic treated trees trout U.S. Dept United vegetation Wildlife young