by Ferenc M Pallos | John E Casida.
by Gunter Zweig | .
by Marjorie A Hoy | Donald C Herzog.
by C B Huffaker | P S Messenger.
by Brian F Bland | .
by William R Bushnell | Alan P Roelfs.
by Alan P Roelfs | .
by George F Spragus | .
by Joseph H Hulse | .
by G W Butler | R W Bailey.
by Julio Bird | Karl Maramorosch.
by James G Horsfall | Ellis B Cowling.
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