1. Insect pests of cotton;Afzal,1983
2. Studies on the cotton jassid (Amrasca (Empoasca) devastans Dist.) in the Punjab. III. Effect of jassid infestation on the development and fibre properties of the cotton plant;Afzal;Indian Journal of Agricultural Science,1943
3. Progress in chemical control of pests of cotton in the Gezira;Hassan,1970
4. Cotton crop environment, growth and yield in the Sudan Gezira;Jackson;Cotton Growing Review,1969
5. Effect of jassid attack on cotton yield and quality in the Sudan Gezira;Jackson;Empire Cotton Growing Review,1965