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Two hundred-fifty transparencies, displaying a new digital database consisting of 25 degraded versions (5 blur levels x 5 noise levels) of each of 10 digitized, first-generation positive… (More)
The lead contents of two species of mussels (Mytilus californianus and M. edulis) collected along the Pacific coast from Piedras Blancas, California to Punta Banda, Baja California were determined by… (More)
The lead contents of several specimens of flora and fauna collected during 1971, 1972 and 1973 along the Pacific coast from Piedras Blancas, California to Punta Banda, Baja California were determined… (More)