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In: Environmental Conservation, 1976, vol. 3, no. 1, p. 74-75
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In: Environmental Conservation, 1975, vol. 2, no. 2, p. 155-156
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In: Environmental Conservation, 1977, vol. 4, no. 3, p. 226-226
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In: Environmental Conservation, 1976, vol. 3, no. 4, p. 314-314
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In: Environmental Conservation, 1978, vol. 5, no. 4, p. 262-262
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In: Oryx, 1985, vol. 19, no. 3, p. 167-167
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