Summers-Smith, J. Denis The Sparrows : a study of the genus Passer / by J. Denis Summers-Smith ; illustrations and colour plates by Robert Gillmor. - 342 p.: il. ISBN Nat. Bib. No.: GBB863601 bnb Subjects--Topical Terms: FríngidosPinzones Universal Decimal Class. No.: 598.296.1