The earthworms (lumbricidae and sparganophilidae) of Ontario
Subtitle: John W. Reynolds.  Illus. by Daniel L. Dindal.
Contributors: Royal Ontario Museum.
Series: Life Sciences miscellaneous publication
Publisher: Royal Ontario Museum
Published: 1977
Place of publication: Toronto
Number of pages: 141
Subjects: Lumbricidae -- Ontario; Annelida -- Ontario