by Hay, R K M | .
by Lee, J.A | S Mcnell Ed.
by Old , R W | .
by Wilkinson , J F | .
by Dawes , Ian W | .
by Campbell , R | .
by J.M. Anderson | .
by J.M. Lambert | .
by Robert M. May | .
by Angela E.R. Taylor | R. Muller.
by Michael Begon | Martin Mortmer.
by John A. Downing | .
by A. H . Fitter | .
by Timothy Bagenal | .
by Michael J. Crawley | .
by D.B. A. Silk | .
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