by Bertrand Russell | .
by S.Chandrasekhar.
by Paul Q. Hirst | .
by Eileen Younghusband | .
by W.M. Williams | .
by H.I.Moore | .
by G.E. Wickens | J.R. Goodin D.V. Field.
by S. H. Glenister | .
by R. Meidner | .
by R. E. Caves | .
by P.J.Devine | .
by R. A. Leeson | .
by W.P.Seabrook | .
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