Scott, D. H. Flowerless plants / D. H. Scott ; Extensively revised by C. T. Ingold - 12th ed. - London : Adam and Charles Black, 1955 [Reprinted 1961] - xiv, 170 p. : ill. ; 21 cm. Includes index Subjects--Topical Terms: CryptogamsPlant anatomy Dewey Class. No.: 586 / SCF 1961