Birding the Delaware Valley region
Subtitle: a comprehensive guide to birdwatching in southeastern Pennsylvania, central and southern New Jersey, and northcentral Delaware
By: John J. Harding and Justin J. Harding.
Publisher: Temple University Press
Published: 1980
Place of publication: Philadelphia
Language: eng
Number of pages: 223
Subjects: Bird watching -- Delaware River Valley (N.Y.-Del. and N.J.)
Notes: 127,998

Bibliography: p. 209-211.