Nelson, Mark. <br/><br/>
Biosphere 2 agriculture :  test bed for intensive, sustainable, non-polluting farming systems 

<br/><br/> Sobretiro de: Outlock on agriculture 22 (3) 1993 pp.167-174 
<br/><br/><label>LCCN: </label>82227 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biósfera.<br/>Labranza de conservación.<br/>Sistemas de cultivo.