Breeding Biology of California and Ring-Billed Gulls by Kees Vermeer
1970. No Edition Remarks. 52 pages. Pictorial paperback. Canadian wildlife service report series No.12. Pages are mildly tanned throughout. Text is clear. Binding remains firm. Covers have mild edge-wear with curling to corners. Visible tanning to spine and edges with scuffing to spine ends. Traces of a previous price tag to front cover.