North American dragonflies of the genus Somatochlora
By: byE. M. Walker.
Series: University of Toronto studies. Biological series -- [no. 26]
Publisher: University of Toronto
Published: 1925
Place of publication: [Toronto]
Language: eng
Number of pages: 202
Subjects: Dragonflies.
Notes: Descriptive letterpress on versos facing the plates.

"List of references": p. 191-202.

Photocopy. Toronto : University of Toronto, 1999. 24 cm.