By Unknown
By Talbot, Rob, Whiteman, Robin
By Mackay, Richard
By H.H.Swinnerton
By Brooks, Margaret M., Knight, Charles
By Salinger, Pierre, Cameron, R.
By McCullagh, Patrick
By Wheatcroft, Andrew
By Reader's Digest
By Reader's Digest Association
By Robert Gibbons, Gibbons, Robert
By Lovelock, James
By Woodell, S.R.J.
By Doris L Holmes
By Boyd, Lizzie. (Consultant Editor).
By Unknown, BOYD (Lizzie, editor)
By Edited By Lizzie Boyd
By Anon
By Plant Partners