Curtis, Otis Freeman,  1888-1949. <br/><br/>
An introduction to plant physiology / 
by Otis F. Curtis and Daniel G. Clark. 
 - New York :  McGraw-Hill,  1950 
 - xiii, 752 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant physiology.