by W. Jongmans
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Die Calamariaceen des Rheinisch-Westfäl...
Cordaitales
Psilophyta (incl. Palaeophyllales und Ba...
Flora of the Carboniferous of the Nether...
Die Karbonflora der Schweiz
Ueber Brutkörper bildende Laubmoose
Fossil gymnosperm woods in Hungary from ...
Les gymnospermes actuelles et fossiles ....
Origin and evolution of gymnosperms
The distribution of conifer and taxad ge...
Indian gymnosperms in time and space
Polen morfolojisi ve Türkiyeʼnin öneml...