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J. John
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Serology and systematics of the Ebenales and the Theales
K. Kolbe, J. John, 1980 .
The Primulales: Serological contributions to the problem of their systematic position
J. John, D. Frohne, 1978 .
THE COMPOSITION OF SAPPHIRINE FROM SALVADOR, BAHIA AND CONDITIONS OF ITS FORMATION
J. John, 1976 .