By Leyden, James J., Rawlings, Anthony V.
By Laden, Karl
By Kenneth J. Lissant
By C. Ray Greek, Jean Swingle Greek
By Terry Wireman
By McDuell, G.R.
By Robert Alexander McCance, Elsie M. Widdowson
By R.W. May, etc.
By Peter Atkins, Loretta Jones, Leroy Laverman
By M. Fogiel
By M.B. East, D.J. Ager
By P.E. Gosling, Dr. William J. Marshall, Michael C. Clapham
By Pannall, P.R., Kotasek, Dusan
By Hutton, Tim, C.C.F.R.A, .
By W.J. Youden
By McLafferty, F.W.
By Paul A. Bristow
By Green, John, Damji, Sadru
By Lemons, Don S.
By Webb, Geoffrey P.
By Crighton, Crighton