International institute for land reclamation and improvement (Wageningen \ Netherlands) Vries, C A de (com.) <br/><br/>
Agricultural extension in the developing countries  a bibliography 

 - Wageningen  International institute for land reclamation and improvement  1968 
 - 125p.; 22cm. 
 - International institute for land reclamation and improvement .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture extension bibliography<br/>Bibliography - agriculture extension - developing countries<br/>Developing countries bibliography