WILLIAMSON, Kenneth — Indentification for Ringers 1 - The Genera; 2 - The Genus (Phylloscopus) 3 - The Genus - Sylvia

British Trust for Ornithology, 1968. Used - Good. Good set of 3 paperbacks Revised editions. Sound reference copies in tight bindings; Spines very faded, with titles almost illegible; Owner's name in type at head of each front cover; same name written in ink on verso of front cover; pages neat, though a little yellowed on edges; notes inked on inside of back cover of vol. 1. Photo:.