Wojtkowski, Paul A. <br/><br/>
Agroecological economics :  substainability and biodiversity / 
Paul A. Wojtkowski 
 - Amsterdam :  Elsevier/Academic Press,  2008 
 - xxi, 293 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>9780123741172  RM246.22 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology--Economic aspects