Higgins, Lionel George A field guide to the butterflies of Britain and Europe [by] Lionel G. Higgins and Norman D. Riley. With illus. by Brian Hargreaves. - [1st American ed.] - Boston Houghton Mifflin 1970. - 380 p. col. illus., maps. 20 cm. 920403 Bibliography: p. [339]-340. LCCN: 76120836 Subjects--Topical Terms: Butterflies--Identification.--EuropeButterflies--Identification.Butterflies--Identification.--Great Britain LC Class. No.: QL555.A1 / H54 1970b Dewey Class. No.: 595.78/9/094