by Robert S. Desanto | .
by Leith, Helmut | Whittaker, Robert H.
by R. Rieger | .
by Leonid I. Korochkin | .
by K.H. Chadwick | H.P Leenhouts.
by Walter Hoppe | .
by Jiirgen Kiefer | .
by P.H. Connett | .
by Werner Kunz | .
by Franz Christian Czygan | .
by Felderer B | .
by Zev Navch | Arthur S Lieberman.
by A P A Vink | .
by Hermann Waibel | .
by William E Stewart | .
by Precht, J | .
by Batschelet, Edward | .
by Halmos, Paul R | .
by Iosifescu, P | .
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