Mathematical bioeconomics the mathematics of conservation by Clark, Colin Whitcomb 1931-

Ecological applications a publication of the Ecological Society of America.

Economics and biological diversity developing and using economic incentives to conserve biological resources by McNeely, Jeffrey A.

The economics of biological diversity apologetics or theory? by Norgaard, Richard B.

Mathematical bioeconomics the optimal management of renewable resources by Clark, Colin Whitcomb 1931-

The biology of agricultural systems by Spedding, C. R. W.

The biology of agricultural systems by Spedding, C.R. W.

Biology and the manufacturing industries proceedings of a symposium held at the Royal Geographical Society, London, on 29 and 30 September 1966

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Man in nature by Bates, Marston

Man in nature by Bates, Marston, 1906-1974