n.a. <br/><br/>
Basic calculations in agriculture, irrigation and animal husbandry. 

 - The Netherlands  AGROMISA  2008 
 - 89p.  illus. 
<br/><br/><label>ISBN: </label>9070857057 
<br/><br/><label>LC Class. No.: </label>S612  / .B29 2008