by Lake Dillon Colorado | .
by David M. Gates | Rudolf B. Schmert.
by O.W. Heal | D.F. Perkins.
by H.A. Mooney | M. Gordon.
by Francis Dov Por | .
by Stephen R. Kessell | .
by F.J. Kruger | D.T. Mitchell J.U.M. Jarvis.
by Edwin R. Lewis | .
by R. Boje | M. Tomczak.
by R.Norman French | .
by George S. Innis | .
by D. Binkley | .
by A.S. Bravermen | D.J. Brenner.
by Miles H.A. Keenleyside | .
by A. Klopper | T. Chard.
by Zechmeister, L | .
by Schulz, G E | .
by Marfunin, A S | .
by Forstner, U | .
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