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by Box, Henry W.
by Chambers, George
by Emerson, Ralph Waldo
by Chaplin, Arnold, M.D.
by Lee, Margaret L.
by Newman, F. W.; Finlay, R.; Phillips, M. L.
by Craighead, James Geddes
by Donald Voet (Univ. of Pennsylvania); Charlotte W. Pratt (Seattle, Washington); Judith G. Voet (Swarthmore College)
by McGee, Thomas D'Arcy
by Warren, Frederick E.