Walton, Peter D. <br/><br/>
Principles and practices of plant science / 
Peter D. Walton. 
 - Engle-wood Cliffs, NJ :  Prentice Hall,  c1988. 
 - xvi,439 p.: ill. 
<br/><br/> Includes bibliographies and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops<br/>Botany