Jeffrey, C. <br/><br/>
An Introduction to plant taxonomy 
C. Jeffrey. 
 - 2nd ed. 
 - Cambridge  Cambridge Univ. Press  1982 
 - vii, 154p., ill.; 21cm. 
<br/><br/><label>ISBN: </label>0-521-28-775-8. 
<br/><br/><label>Dewey Class. No.: </label>581.02  / J37I