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4by Nel, Deon C., Ryan, Peter G., Crawford, Robert J., Cooper, John, Huyser, Onno A.Get access
Published in Polar Biology (2002)
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5by Nel, Deon C., Nel, Jeanne L., Ryan, Peter G., Klages, Norbert T.W., Wilson, Rory P., Robertson, GrahamGet access
Published in Biological Conservation (2000)
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6by Nel, Deon. C., Ryan, Peter G., Nel, Jeanne L., Klages, Norbert T. W., Wilson, Rory P., Robertson, Graham, Tuck, Geoff N.Get access
Published in Ibis (2002)
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Article in Journal/Newspaper