Mettrick, Hal <br/><br/>
Developpement oriented reasearch in agriculture : an ICRA textbook  : Hal Mettrick 

. - Wageningen  : ICRA, 1993
. - XXVI-287p.  ; Couv. en coul. 
<br/><br/>Bibliogr. 
<br/><br/><label>ISBN: </label>9073041163 
<br/><br/><label>Universal Decimal Class. No.: </label>630.