1. A method of computing the effectiveness of an insecticide;Abbott;J. Econ. Entomol,1925
2. Feeding behavior of the cotton leafworm, Spodoptera littoralis (Boisd.), sublethally infected with Bacillus thuringiensis Berliner;Abdallah;Bull. Entomol. Soc. Egypt, Econ. Ser,1970
3. Effect of Bacillus thuringiensis Berliner on reproductive potential of the cotton leafworm;Abdallah;Bull. Entomol. Soc. Egypt, Econ. Ser,1970
4. Lethal and sublethal action of Bacillus thuringiensis Berliner on the cotton leafworm, Spodoptera littoralis (Boisd.);Abul-Nsar;Bull. Entomol. Soc. Egypt, Econ. Ser,1970
5. Laboratory techniques for rearing Heliothis species on artificial medium;Berger;U.S. Dept. Agr. ARS-33-84,1963