VINSON S B, BOYD C E, FERGUSON D E
Science. 1963 Jan 18;139(3551):217-8. doi: 10.1126/science.139.3551.217.
Mosquito fish from waters near cotton fields that have had a long history of treatment with chlorinated hydrocarbon pesticides exhibited a marked resistance to DDT compared with fish from areas which had had no past exposure to insecticides.