1. Bioassay of 3 bacterial insecticides on the base of Bacillus thuringiensis using Anagasta kühniella as a test insect;Afify;Bull. Soc. Entomol. Egypte,1964
2. Precision of estimates of the median lethal dose of insect pathogens;Bucher;J. Insect. Pathol,1963
3. Les méthodes de titrage et la standardisation des préparations de Bacillus thuringiensis;Burgerjon,1964
4. A table of Abbott's correction for natural mortality;Haaly;Ann. Appl. Biol,1952