Resource use in organic farming  : Proceeding of the Third ENOF Workshop, Ancona, 5-6 June 1997 
The European Network for Scientific Research Coordination in Organic Farming ; edited by J. Isart & J.J. Llerena 
 - Barcelona  J. Isart & J.J. Llerena  1997 
 - 359 p.  30 cm 
<br/><br/><label>ISBN: </label>8492153326 
<br/><br/><label>Subjects--Index Terms: </label>Recursos naturales Congresos Agricultura organica Economia agricola