Histological changes in the liver of Oreochromis mossambicus (cichlidae) after exposure to cadmium and zinc
M.Sc. === Heavy metals occur naturally in the environment and are found in varying levels in all ground and surface waters. Some heavy metals are essential elements for the normal metabolism of organisms, while others are non-essential and play no significant biological role. Anthropogenic activitie...
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2008
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| Online Access: | http://hdl.handle.net/10210/1223 |