Early and late dates for summer migrants
By: by Robert Hudson.
Contributors: British Trust for Ornithology
Series: Field guides / British Trust for Ornithology -- no. 15; Field guide (British Trust for Ornithology) -- no. 15
Publisher: British Trust for Ornithology
Published: 1973
Place of publication: Tring
Language: eng
Number of pages: 43
Subjects: Birds -- Great Britain -- Migration.
Notes: Index.

Bibliography: p.41.

Gift; Jack Satterly.