1-4 of 4 Books

Making the most of indigenous trees
By Fanie Venter
The genus Selaginella in tropical South America
The genus Selaginella in tropical South America
By Arthur Hugh Garfit Alston
Annotated list of Vermont pteridophytes Lycopsida, Equisetopsida, Filicopsida
Annotated list of Vermont pteridophytes Lycopsida, Equisetopsida, Filicopsida
By Arthur V. Gilman