By Peter Ginn and Geoff McIlleron
By Jacobs, Warren
By T.; Jacobson, S. Hepburn
By Wood, Peter
By Dozier, Thomas A., Don Earnest
By Earnest, Don
By McNeely, Jeffrey A., Miller, Kenton R., Reid, Walter V.C., Mittermeier, Russell A., Werner, Timothy B.
By Bookchin, Murray
By Irving Weisdorf & Co
By Andrew Wilton
By Helander, Donald
By Beggs, H. Dale
By Lowell, James D.
By Link, Peter K.
By Sheriff, R. E
By Robert and Barbara Decker
By Bahro, Rudolf
By Lee, Brian
By Taylor, Mike
By Bartholomew, Alick
By Bradt, Hilary
By Raison, Laura
By Barnaby Rogerson, Rose Baring
By Werner M. Busch, Unknown
By John Guy
By W.J. Baird
By Reader's Digest
By Giles, Nick