1. Planktonic analysis of two inland freshwater ecosystems of Jabalpur (MP);Agarkar,1984
2. Seasonal variations in certain nutrient contents of water hyacinth and associated molluscs in Assiut area;Ahmed,1992
3. Heavy metals in water, sediments, fish and plants of river Hind, UP, India;Ajmal;Hydrobiologia,1987
4. Heavy metals in aquatic macrophytes, water and hydrosoils from the river Nile, Egypt;Ali;J. Union Arab Biol. Cairo,1999
5. Chemical Analysis of Ecological Materials, 2nd ed.;Allen,1989