Krull, Charles F. <br/><br/>
Results of the fourth Inter-American spring wheat yield nursery 1963 -1964 /  
Charles F. Krull... et al. 
 - Mexico :    International Maize and Wheat Improvement Center    1967 . 
 - 27 p. :    tabs. ;    23 cm. 
 - CIMMYT Research Bulletin ;    no.7 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Wheat -- Varieties -- Tables -- Periodicals.<br/> Wheat -- Field experiments -- Tables -- Periodicals.<br/> Wheat -- Yields -- Tables -- Periodicals.