Whitehead, D. C. <br/><br/>
The role of nitrogen in grassland productivity :  : a review of information from temperate regions. 

 - Huyley, Berkshire, England :  Commonwealth Bureau of Pastures and Field Crops,  1970. 
 - 202 p. 
 - Bulletin  ; 48 .
 - Bulletin  ; 48 .
<br/><br/>Bibliografía, p. 162-195 
<br/><br/><label>LCCN: </label>53757 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizantes nitrogenados.<br/>Nitrógeno--Efecto en pastos.<br/>Pastizales.
<br/><br/><label>Dewey Class. No.: </label>633.2  / W45