Pieris virginiensis Edwards in Ontario.
Contributors: Toronto Entomologists Association.
Series: Occasional publications -- no. 5; Occasional publication (Toronto Entomologists' Association) -- no. 5.
Publisher: Toronto Entomologists' Association
Published: 1975
Place of publication: [Toronto]
Language: eng
Number of pages: 36
Subjects: Pieris; Butterflies -- Ontario
Notes: Cover title.

Includes bibliographical references.