Proceedings of the workshop on efficient use and maintenance of irrigation systems at the farm level in China 

 - New  York United Nations U S A    1979 
 - "v,108p."  cm. 
 - "Its, Water Resoruces Series. 51" .
<br/><br/><label>Standard No.: </label>84227 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>"X9(D2).41.N7, L9/UN"