Haslam, S. M.  1934- <br/><br/>
River plants :  the macrophytic vegetation of watercourses / 
S.M. Haslam. 
 - Cambridge [Cambridgeshire] :  Cambridge University Press,  1978. 
 - xii, 396 p. :  ill. 
<br/><br/><label>ISBN: </label>0521214939 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stream plants.<br/>Plant communities.