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Published online by Cambridge University Press: 24 August 2009
† See the review by DrWesting, Arthur H., published in Environmental Conservation, Vol. 13, No. 3, pp. 281–2, 1986.-Ed.CrossRefGoogle Scholar
* See the review by DrHoldgate, Martin W., published in Environmental Conservation, Vol. 14, No. 3, p. 282, 1987. -EdCrossRefGoogle Scholar