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>AMCHITKA BIOENVIRONMENTAL PROGRAM. AERIAL AND GROUND-TRUTH PHOTOGRAPHY FOR ENVIRONMENTAL SURVEILLANCE OF AMCHITKA ISLAND, ALASKA. Annual Progress Report, July 1, 1970--June 30, 1971.
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AMCHITKA BIOENVIRONMENTAL PROGRAM. AERIAL AND GROUND-TRUTH PHOTOGRAPHY FOR ENVIRONMENTAL SURVEILLANCE OF AMCHITKA ISLAND, ALASKA. Annual Progress Report, July 1, 1970--June 30, 1971.