Organic agriculture production ( Intermediate) 
3 G E-learning 
 - 3 G E-learning  2016 
 - col.; ill.; 361p.; 30.7cm 
<br/><br/> Includes Index 
<br/><br/><label>ISBN: </label>9789351158899 
<br/><br/><label>Dewey Class. No.: </label>C 635.048 Or68 2016