University of Zambia Library Search for 'au:"Usher, Michael B., 1941-"'

Biological management and conservation;

By Usher, Michael B., 1941-. London, Chapman and Hall 1973 , "Distributed in the U.S.A. by Halstead Press, a division of John Wiley & Sons, Inc., New York." 0412113309

Place Hold on Biological management and conservation;

Ecological stability.

London, New York, Chapman and Hall; Wiley 1974 , "The chapters of this book are based on, but are not identical to, twelve papers given to a 'workshop' meeting at York University on 17-18 July, 1973." | "A Halsted Press Book." 0470896485

Place Hold on Ecological stability.