Hansen, A. A. <br/><br/>
Practical handbook of agricultural science.   
by A. A. Hansen. 
 - Boca Raton  CRC Press  1990 
 - 534p 
<br/><br/><label>ISBN: </label>0849337062 
<br/><br/><label>Dewey Class. No.: </label>630  / N90