by Barrow, G. M.
by Edwards, N. A.
by Allen, L.A.
by Hansen, A.H.
by March, J.
by Dale, E.
by Simmons, G. F.
by Musgrave, R.A.
by Millan, Jacob.
by Terman, Frederick Emmons.
by Churchill, Ruel V.
by Horton, Paul, B.
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