By Suman Singha (University of Connecticut, Storrs, CT, USA), Tara Baugher
By Marshall E. Mace, etc.
By J. L. Innes, Great Britain: Forestry Commission
By R. J. Garner
By A. J. Grayson (former Director of Research, forestry commission, Great Britain, on behalf of the Scottish Forestry Trust)
By Professor Dr. Y. P. S. Bajaj
By Ian Scoones
By Kerry F. Harris (Texas A&M University, College Station, U.S.A.), Oney P. Smith (Hood College, Frederick, Maryland, James E. Duffus (United States Department of Agriculture, Salinas, California)
By Karl Maramorosch, Kerry F. Harris
By Adel A Kader
By K A Longman, R H F Wilson
By Nuri N. Mohsenin
By Christian Bonte-Friedheim, Kathleen Sheridan, International Service for Agricultural Research (ISNAR)
By Tim D. Davis, Bruce E. Haissig, Narendra Sankhla
By Andrew D O'Rourke
By G Roger Fenwick, Ray L Richards, C Hedley, Santosh Khokhar, J Hautvast
By P.M. Harris
By J.M. Thresh
By D.O'D. Bourke, etc.
By Batey, Tom
By Stewart Richards
By van der Heij, M.R.H. Loewik, Th. Ockhuizen
By Sally Festing
By Dale Givens (University of Reading, UK), Samantha Baxter (formerly University of Reading, Anne Marie Minihane (University of Reading, Elizabeth Shaw (University of Reading
By Agriculture, Fish.& Food, Min.of
By Board on Agriculture, National Research Council, Assembly of Life Sciences, Board on Agriculture and Renewable Resources, Food and Nutrition Board
By Spedding, Colin R. W.
By A. Y. Tamime, R. K. Robinson
By Food and Agriculture Organization of the United Nations
By Mike Boland (Riddet Institute, Massey University - Palmerston North, New Zealand), Harjinder Singh (Riddet Institute, Massey University), Abby Thompson (Riddet Institute, Massey University