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S. Cramp ; P. J. Conder ; J. S. Ash 1964Report of the Britich Trust for Ornithology and the Royal Society for the Protection of Birds on Toxic Chemicals, in Collabaration with the Game Research Association, 4Between September, 1962, and July, 1963, chlorinated hydrocarbon residues were found in 304 of 333 birds and 42 of 46 egg samples sent from different parts of Gt. Britain and Eire, and mercury residues in 55 of 142 birds. Sixty-six species were [...]
