Campbell, C. A. <br/><br/>
Crop rotation studies on the canadian prairies 

 - Ottawa :  Canada Agriculture,  1990 
 - 133 p. 
 - Publication  ; 1841/E .
 - Publication  ; 1841/E .
<br/><br/><label>LCCN: </label>58902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Praderas--Canadá.<br/>Rotación de cultivos--Pastos.
<br/><br/><label>Dewey Class. No.: </label>633.2  / C73