By Hunt, John M.
By George Philip & Son
By Brown, Valerie A.
By A.B. TATAKI
By Thomas, John Albert Gay
By Barnard salt
By E N Ramsden and R E Lee
By P. F. Jenkins
By Wills, Jane
By W G Hoskins
By Samuel Terrien
By StephenJay Gould
By Sunstein, Cass R
By William Howarth, Donald McGillivray
By Marco Altamirano
By Beus, Stanley S., Morales, Michael
By Lewis, Sir Clinton, Campbell, James Donald
By Barraclough, Geoffrey
By Lew, Hall, Williams
By Ashworth, G.J., Tunbridge, J.E.
By Archie Carr
By Bennison, G.M., Wright, Alan Edward
By Robert Muir Wood
By Taylor, Peter J
By Great Britain: Department of the Environment, Transport and the Regions
By Hester, R. E.
By Bullock, Peter, Gregory, Peter J.
By Aiken, George R., Mcknight, Diane M., Wershaw, Robert L., MacCarthy, Patrick