Mathematical bioeconomics the mathematics of conservation Bằng 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 Bằng McNeely, Jeffrey A.

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

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

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

The biology of agricultural systems Bằng 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 Bằng Bates, Marston

Man in nature Bằng Bates, Marston, 1906-1974