| http://www.w3.org/ns/prov#value | - As Carson lamented ???With the advent of man the situation began to change, for man, alone of all forms of life, can create cancer-producing substances?????? and ???In being man-made ??? by ingenious laboratory manipulation of the molecules, substituting atoms, altering their arrangement, they (industrial pesticides) differ sharply from the simpler insecticides???derived from naturally occurring m
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