Watson, E. Vernon (Eric Vernon), 1914- <br/><br/>
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 
 - 2nd ed. 
 - Cambridge :  Cambridge University Press,  1968 
 - xvi, 495 p. :  ill. ;  23 cm. 
<br/><br/>Bibliography: p. 15-17 
<br/><br/><label>ISBN: </label>0521067413 
<br/><br/><label>LCCN: </label>68-022665 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mosses--United Kingdom<br/>Liverworts--United Kingdom