British mosses and liverworts : an introductory work, with full descriptions and figures of over 200 species, and keys for the identification of all except the very rare species /
Watson, E. V. 1914-
British mosses and liverworts : an introductory work, with full descriptions and figures of over 200 species, and keys for the identification of all except the very rare species / written and illustrated by E. Vernon Watson with a foreword by Paul Richards - 3rd ed. - Cambridge : Cambridge University Press, 1981 - xviii, 519 p. : ill. ; 23 cm.
Bibliography: p15-17
0521240042
Mosses--Identification--United Kingdom
Liverworts--Identification--United Kingdom
British mosses and liverworts : an introductory work, with full descriptions and figures of over 200 species, and keys for the identification of all except the very rare species / written and illustrated by E. Vernon Watson with a foreword by Paul Richards - 3rd ed. - Cambridge : Cambridge University Press, 1981 - xviii, 519 p. : ill. ; 23 cm.
Bibliography: p15-17
0521240042
Mosses--Identification--United Kingdom
Liverworts--Identification--United Kingdom