Walton, John <br/><br/>
An introduction to the study of fossil plants / 
by John Walton 
 - 2nd ed. 
 - London :  Adam and Charles Black ,  1940 . 
 - 201 p.  Hard Back 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany<br/>Thallophyta and Bryophyta<br/>Lycopodiales
<br/><br/><label>Dewey Class. No.: </label>561  / JOH-I