By Harvey, Miles
By John Noble Wilford
By Mimi Zeiger
By Tony Lewin, Ryan Borroff, Ian Callum
By National Geographic Society
By Edward Albee
By Warren Carroll
By William L. Leffler
By David A. Bender (University College, London)
By Marion Eugene Ensminger (Agriservices Foundation, Clovis, California, USA), Audrey H. Ensminger (Agriservices Foundation
By Sobel, Dava, Dava Sobel
By A. A. Hanson (Silver Spring, MD)
By Shufunotomo
By Great Britain: Ministry of Agriculture, Fisheries and Food, P.D. Lees
By Agriculture, Fish.& Food, Min.of
By Virginia Nightingale
By Stroud, K.A., Booth, Dexter J.
By M.L. Shannon
By Great Britain: Agricultural Development and Advisory Service, J.R. Archer, M.J. Marks
By Pat Langley-Price, Philip Ouvry
By Kevin F. Kiley
By Philip Parker, Collins Books
By William Allstetter, Tami Schuyler
By Ian M. Smallwood
By Cutler J. Cleveland (Director, Center for Energy and Environmental Studies, Boston University, MA, USA), Christopher G. Morris (Lexicographer, Morr...
By Kimball Nill (Minnesota Soybean Research & Promotion Council, Mankato, USA)
By Martin Buckley, Chris Rees
By Doris Simonis
By Sybil P Parker, McGraw-Hill