by Leonid I. Korochkin | .
by H. Ursprung | R. Nothiger.
by W. Nachtigall | .
by Peter V. Booysen | Neil M. Tainton.
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 Hermann Remmert | .
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 | .
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