A Bibliography of Botanical Field Work in Western Pennsylvania Charles M. Boardman Published: 1984 Total Pages: 108 Get eBook
Publication - Botanical Society of Western Pennsylvania Botanical Society of Western Pennsylvania Published: 1911 Total Pages: 74 Get eBook
Contributions from the Botanical Laboratory of the University of Pennsylvania Published: 1907 Total Pages: 106 Get eBook
Bulletin of the Hunt Institute for Botanical Documentation Hunt Institute for Botanical Documentation Published: 1979 Total Pages: 330 Get eBook
Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania University of Pennsylvania. Botanical Laboratory Published: 1935 Total Pages: 146 Get eBook