1. Abel, A. L., 1954, The rotation of weed killers, in: “Proceedings of the 2nd British Weed Control Conference,” British Weed Control Council.
2. Anonymous, 1967, Report of the First Session of the FAO Working Party of Experts on Resistance of Pests to Pesticides, FAO Public PL/1965/18.
3. Anonymous, 1974, Weeds Today, 5:14.
4. Antonovics, J., 1971, The effects of a heterogeneous environment on the genetics of natural populations, Amer. Sci., 59:593–599.
5. Antonovics, J., and Bradshaw, A. D., 1970, Evolution in closely adjacent plant populations. VIII. Clinal patterns at a mine boundary, Heredity, 25:349–362.