by C S Reynolds | .
by J R Postgate | .
by D B Grigg | .
by Philip G Pardey | Johanes Roseboom.
by M H Arnold | .
by M R Jarman | .
by C S Barnard | J S Nix.
by P.S.Eagleson | .
by P. Calow | .
by J.C Wills | .
by H.K.Airy Shaw | .
by Alfred North Whitehead | .
by A. J. Gibbs | H.R.C. Meischke.
by Imer Lakatos | .
by M. H. Arnold | .
by Kenneth A. Kershaw | .
by J. R. Hillman | .
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