Flora of the Patuxent Research Refuge, Maryland
By: by Neil Hotchkiss
Series: Contribution from the Patuxent Research Refuge -- no. 1.; Wildlife leaflet -- BS-154.
Publisher: U.S. Dept. of the Interior, Bureau of Biological Survey
Published: 1940
Place of publication: Washington, D.C
Language: eng
Number of pages: 34
Notes: Caption title.

"May 1940."