Physiological processes limiting plant productivity / 
C. B. Johnson 
 - London :  Butterworth,  1981 
 - 395 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0408106492 
<br/><br/><label>LCCN: </label>80-41941 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant physiology--Congresses