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1by Bexar Audubon Society“... the impacts of snow goose overpopulation are on other nongame birds. Sullivan, who has worked as a waterfowl...”
Published 1998
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2by Bexar Audubon Society“... issue (winter 1997- 1998) dedicated to human overpopulation, especially as it relates to the environment...”
Published 1998
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3by Christie, Robert W., 1923-;“... time, overpopulation of the Earth is a fundamental cause of most of the world’s problems, especially...”
Published 2013
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