Further notes on the flora of the Conowingo or Serpentine Barrens of Southwestern Pennsylvania
By: by Francis W. Pennell
Publisher: The Academy
Published: 1913
Place of publication: Philadelphia
Language: eng
Number of pages: 539
Subjects: Botany
Other titles: Proceedings of the Academy of Natural Sciences of Philadelphia.
Notes: Title from cover.

"From the Proceedings of the Academy of Natural Sciences of Philadephia, December, 1912."

"Issued February 11, 1913."