Ferns and Flowering Plants of Westmoreland County, Pennsylvania Dorothy L. Pearth Published: 1975 Total Pages: 115 Get eBook
The Ferns and Flowering Plants of Central Pennsylvania James Peter Kelly Published: 1937 Total Pages: 128 Get eBook
Check List of the Flowering Plants and Ferns of Alleghny County Pennsylvania Leroy K. Henry Published: 1951 Total Pages: 123 Get eBook
Check list of the flowering plants and ferns of Allegheny County, Pennsylvania LeRoy Kershaw Henry Published: 1951 Total Pages: 123 Get eBook
New Records of Ferns and Flowering Plants for the Carnegie Museum Herbarium from Bedford County, Pennsylvania L. K. Henry Published: 1953 Total Pages: Get eBook
A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada Asa Gray Published: 1908 Total Pages: 1886 Get eBook
Analytical Key to the Ferns and Flowering Plants in the Atlantic Section of Middle Florida. (Wild and Cultivated) John Fredric Baerecke Published: 1914 Total Pages: 190 Get eBook
The Ferns of Allegheny County, Pennsylvania Lewis Sylvester Hopkins Published: 1914 Total Pages: 148 Get eBook
The Ferns and Flowering Plants of the Clark Reservation, Onondaga County, New York Frank Edwin Egler Published: 1943 Total Pages: 72 Get eBook
