Watson, E Vernon  <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 exept the very rare species / 
E Vernon Watson; Paul Richards 
 - Cambridge :   Cambridge University Press,  1963 
 - 419 p, :  ill, ;   24 cm. 
<br/><br/> Include index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bryophytes<br/>mah -- mahovi -- taksonomija 
<br/><br/><label>Dewey Class. No.: </label>588.2  / WAB 1963