Journal of farming systems research-extension. 
 Journal for farming systems research-extension 

 - Tucson, Ariz., USA :  Association of Farming Systems Research-Extension, 
 - v. :  ill. ;  23 cm. 
 - Began with v. 1, no. 1 (1990). 
<br/><br/> Decription based on: Vol. 5, no. 1 (1995); title from cover.  Title varies slightly. 
<br/><br/><label>ISSN: </label>1051-6786 
 = Journal of farming systems research-extension 
 = J. farming syst. res.-ext. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems--Developing countries--Periodicals<br/>Agricultural extension work--Research--Developimg countries --Periodicals.<br/>Sustainable agriculture--Developing countries--Periodicals
<br/><br/><label>LC Class. No.: </label>S494.5.S95  / J69