By Stewart C. Bushong
By C. Ray Greek M. D.
By N/A Calabrese
By A.Von Engel
By H.P. Meyers
By D. H. McIntosh and A.S.Thom
By G.H.A. Cole, W.G. Watton
By R. A. Hann
By Van Rose, Susanna
By DE PEDGLEY, Pedgley, De
By Northcott, Jim
By Ball, Philip, Philip Ball
By Dave Riddick, Vikki Allen
By Richard Osborne
By Paul Parsons
By Douglas Palmer
By Sam Kean
By Professor Sue Black, Black, Professor Sue
By Michael Picard
By Bill Price
By Lehrer, Jonah
By Jo Marchant