By Cousteau, Jacques-Yves, Dumas, Frederic
By Naylor, Paul
By Stadelmann, Peter
By Cafiero, Jahoda
By Parker, Steve
By Jacques-Yves Cousteau
By Chhapgar, B. F.
By Earle, Sylvia A.
By Matthews, Downs
By Katherine Orr
By Jones, Alick, Sefton, Nancy
By Thraves, Stuart
By Dieter Untergasser
By Bellomy, Mildred D.
By Mills, Dick
By Cox, Dr Lynne
By Reader's Digest
By Daniel Gilpin
By Brightwell, Chris R.
By Duddington, C.L.
By Steele, Philip
By McDiamid
By Balcombe, Jonathan
By Patrick Barkham
By Glass, Spencer
By Andrews, Chris; Exell, Adrian; Carrington, Neville
By Tullock, John H
By Scheurmann, Ines