Songqiao, Z. <br/><br/>
Systems of vertical agriculture in the mountain areas / 
Z. Songqiao 
 - Kathmandu :  ICIMOD ,  1990 
 - 39p. :  ill. ;  30 cm. 
 - ICIMOD Discussion Paper  No. 22 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mountain<br/>Agriculture
<br/><br/><label>Gov. Doc. Class. No.: </label>XZ ICIMOD MFS DP-22