... A revision of the libelluline genus Perithemis (Odonata)
By: by Dr. F. Ris ...
Series: University of Michigan.  Museum of zoology.  Miscellaneous publications,; no. 21
Publisher: The University
Published: 1930
Place of publication: Ann Arbor, Mich
Language: eng
Number of pages: 50
Subjects: Dragonflies.
Notes: Bibliography:  p. 45-47.
Descriptive letterpress on versos facing the plates.