Book reviews: Clark,J. R. 1977: Coastal ecosystem management. A technical manual for the conservation of coastal zone resources. New York: John Wiley. x+928 pp. $48.50 (£28.90)

Dasmann, R.F. 1972: Environmental conservation, third edition. New York: John Wiley.

Harris, J.A. and Williams, D.G. 1975; The ecological basis for natural resource management . Proceedings of the Ecological Society of Australia 9, 192—203.

Ranwell, D.S. 1972: Ecology of salt marshes and salt dunes. London: Chapman and Hall.

Usher, M.B. 1973: Biological management and conservation. London: Chapman and Hall.

Van Dyne , G. M. , editor, 1969: The ecosystem concept in natural resource management. New York and London: Academic Press.

Watt, K.E.F. 1968: Ecology and resource management: a quantitative approach . New York: McGraw-Hill