The scales of roach ; Age and growth of the trout (Salmo trutta), grayling (Thymallus thymallus), perch (Perca fluviatilis), and roach (Rutilus rutilus) of Llyn Tegid (Bala) and the roach of the River Birket.
Contributors: Great Britain. Ministry of Agriculture and Fisheries.
Series: Fishery investigations -- ser. 1, v. 5, no. 7.
Publisher: H.M.S.O
Published: 1953
Place of publication: London
Language: eng
Number of pages: 18
Subjects: Scales (Fishes); Rutilus -- Wales.; Trout -- Wales.; Perch -- Wales.; Fishes -- Age.; Fishes -- Growth.; Fishes -- Wales.
Other titles: Age and growth of the trout (Salmo trutta), grayling (Thymallus thymallus), perch (Perca fluviatilis), and roach (Rutilus rutilus) of Llyn Tegid (Bala) and the roach of the River Birket.
Notes: At head of title: Ministry of Agriculture and Fisheries.

Includes bibliographical references (p. 18).
Table of contents: value: Pt. 1. The scales of roach; value: Pt. 2. Age and growth of the trout (Salmo trutta), grayling (Thymallus thymallus), perch (Perca fluviatilis), and roach (Rutilus rutilus) of Llyn Tegid (Bala) and the roach of the River Birket.