Arber, Agnes Robertson,  1879-1960 <br/><br/>
Water plants :  a study of aquatic angiosperms / 
by Agnes Arber with preface by William T. Stearn 
 - Lehre, Germany :  Verlag Von J.Cramer,  1963 
 - 436 p. :  25 cm. 
 - Historiae naturalis classica  t. 23 .
<br/><br/> First published by Cambridge University Press, 1920 
<br/><br/><label>ISBN: </label>3768201570 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater plants<br/>Marine plants