Physiological aspects of crop yield  
/ editorial committee: Jerry D. Eastin [et all....] 
 - Madison, USA :  American Society of Agronomy,   1969. 
 - xx, 396 p. ;  25 cm. 
<br/><br/> "Proceedings of a symposium sponsored by the University of Nebraska, the American Society of Agronomy, and the Crop Science Society of America, and held at the University of Nebraska, Lincoln, Nebr., January 20-24, 1969." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant physiology --Congresses; Crop yields --Congresses.
<br/><br/><label>Dewey Class. No.: </label>581.1 EAS  / 1140