Detached from Proceedings of the Academy of Natural Sciences of Philadelphia, Dec. 1919."Issued March 11, 1920."-- t.p.Mode of access: Internet
"Reprinted from Forest Club Annual, University of Nebraska, Vol. V, 1913."Mode of access: Internet
Cover title.Detached from Transactions of The Academy of Science of St. Louis, v. 13, no. 7.Mode of ...
"From the Proceedings of the Academy of natural sciences of Philadelphia, 1904," p. 108-118.Mode of ...
Separate from Proc. Acad. Nat. Sci. Phila. Pt. III 1921: 459-536.Mode of access: Internet
"Reprinted, without change of paging, from Torreya 19 : 107-119, August 7; 143-152, September 17; 16...
"Printed by the George W. Carpenter fund for the encouragement of original scientific research."Mode...
Also considered as Contribution from the New York botanical garden, no. 219.Mode of access: Internet
"Issued January 13, 1911.""From The Proceedings of the Academy of Natural Sciences of Philadelphia, ...
Issued February 9, 1927.Bulletin of the U.S. National Museum.Mode of access: Internet
From Proceedings of the Academy of Natural Sciences, Philadelphia, 1887-1901.Mode of access: Interne...
"Reprinted from the Bulletin of the Torrey botanical club, vol. xx. no. 5, May, 1893."Mode of access...
"Reprinted from the Bulletin of the Torrey Botanical Club, vol. XX, no. 8, August, 1893."Cover title...
Reprinted from: Proceedings of the American Philosophical Society. 1911. 50: 301-315.Mode of access:...
From the Proceedings of The academy of natural science of Philadelphia, 1893.Mode of access: Interne...
"Reprinted from Annals of the Carnegie Museum, vol. 1, 1901."Mode of access: Internet
"Reprinted from Forest Club Annual, University of Nebraska, Vol. V, 1913."Mode of access: Internet
Cover title.Detached from Transactions of The Academy of Science of St. Louis, v. 13, no. 7.Mode of ...
"From the Proceedings of the Academy of natural sciences of Philadelphia, 1904," p. 108-118.Mode of ...
Separate from Proc. Acad. Nat. Sci. Phila. Pt. III 1921: 459-536.Mode of access: Internet
"Reprinted, without change of paging, from Torreya 19 : 107-119, August 7; 143-152, September 17; 16...
"Printed by the George W. Carpenter fund for the encouragement of original scientific research."Mode...
Also considered as Contribution from the New York botanical garden, no. 219.Mode of access: Internet
"Issued January 13, 1911.""From The Proceedings of the Academy of Natural Sciences of Philadelphia, ...
Issued February 9, 1927.Bulletin of the U.S. National Museum.Mode of access: Internet
From Proceedings of the Academy of Natural Sciences, Philadelphia, 1887-1901.Mode of access: Interne...
"Reprinted from the Bulletin of the Torrey botanical club, vol. xx. no. 5, May, 1893."Mode of access...
"Reprinted from the Bulletin of the Torrey Botanical Club, vol. XX, no. 8, August, 1893."Cover title...
Reprinted from: Proceedings of the American Philosophical Society. 1911. 50: 301-315.Mode of access:...
From the Proceedings of The academy of natural science of Philadelphia, 1893.Mode of access: Interne...
"Reprinted from Annals of the Carnegie Museum, vol. 1, 1901."Mode of access: Internet
"Reprinted from Forest Club Annual, University of Nebraska, Vol. V, 1913."Mode of access: Internet
Cover title.Detached from Transactions of The Academy of Science of St. Louis, v. 13, no. 7.Mode of ...
"From the Proceedings of the Academy of natural sciences of Philadelphia, 1904," p. 108-118.Mode of ...