Holmes, W. <br/><br/>
Nitrogenous fertilizers and the production of crops and grass /    
W . Holmes and D. T. A. Aldrich. 
 - London :   Wye College, University of London ,   1956 
 - 9 - 14 p:    ill. ;    26 cm. 
 - Reprint ;   no.90 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen fertilizers ----Great Britain.----<br/>Crops ----Fertilizers.----<br/>Grasses.--------