Gast, H./ Richter.J. <br/><br/>
Ecological appropriate agriculture/ 
Gast, H./ Richter.J. 
 - Germany  OSE/ZEL  1995 
 - viii, 164pg ills  Pbk 
<br/><br/><label>ISBN: </label>3824441715 
<br/><br/><label>LC Class. No.: </label>S 471. E3 1995