Theobald, G.H. <br/><br/>
Methods and machines for tile and other tube drainage / 
G.H. Theobald 
 - Rome :      Food and Agriculture Organization (FAO) ,  1963 
 - xiii, 104p. :  ill. ;  20 cm. 
 - FAO agricultural development paper .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigation<br/>Drain-tiles<br/>Drainage
<br/><br/><label>Dewey Class. No.: </label>631.7  / FAO-12