venational study of the suborder zygoptera (Odonata)
Subtitle: with keys for the identification of genera.
Series: American Entomological Society. Memoirs -- no. 3.; Memoirs of the American Entomological Society -- no. 3.
Publisher: American Entomological Society
Published: 1919
Place of publication: Philadelphia
Language: eng
Number of pages: 78
Subjects: Damselflies; Dragonflies