by Stephen R. Kessell | .
by Pierre Legendre | Louis Legendre.
by Otto Hutzinger | .
by F.J. Kruger | D.T. Mitchell J.U.M. Jarvis.
by Edwin R. Lewis | .
by A. Hadas | .
by Arthur D. Hasler | .
by R. Boje | M. Tomczak.
by R.Norman French | .
by George S. Innis | .
by D. Binkley | .
by W.K. Lanenroth | .
by H. Precht | .
by A.S. Bravermen | D.J. Brenner.
by B.E.S. Gunning | A.W. Roberds.
by J. Syfenga | .
by Hugh Dingle | .
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