1. Resistance of plants to insects;Beck;A. Rev. Ent.,1965
2. Purine derivatives in alfalfa as growth stimulants for Bacillus subtilis;Bickoff;J. Agric. Fd Chem.,1968
3. Laboratory studies of factors determining host plant selection by the alfalfa weevil, Hypera postica (Gyllenhal);Byrne;Maryland Bull. agric. Exp. Sta.,1967
4. Feeding behavior;Dethier,1966
5. The raison d'être of secondary plant substances;Fraenkel;Science, N.Y.,1959