1. Effect of moisture stress on plants;Abd El Rahman;Phyton,1973
2. Effect of moisture stress on metabolic products and ions accumulation;Abd El Rahman;Plant Soil,1971
3. “The Distribution and Abundance of Animals.”;Andrewartha,1954
4. Chemical factors affecting selection of food plants by ruminants;Arnold,1972
5. “Parasitic Insects.”;Askew,1971