Pal, B. P. 1906-1989. Charophyta, by B.P. Pal [and others]. - New Delhi, Indian Council of Agricultural Research [1962] - x, 130 p. illus. 25 cm. - I.C.A.R. monographs on algae ; 5 . Bibliography: p. 116-123. LCCN: sa 64002934 Subjects--Topical Terms: Characeae.Algae--India. LC Class. No.: QK569.C47 / P26