Yuan, Yibo. <br/><br/>
Ren ding sheng tian / 
Yuan Yibo zhu. 
 - [China] :  Yong xin chu ban she,  1956. 
 - 68 p. ;  19 cm. 
<br/><br/><label>LCCN: </label>c  59003306  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigation--China.
<br/><br/><label>LC Class. No.: </label>TC701  / .Y8