Gwyer, G. D. <br/><br/>
Perennial crop supply response: the case of Tanzania sisal 

 - Ashford  WYE College, School of Rural Economic and Related studies  1971 
 - vii,46p.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sisal industry
<br/><br/><label>LC Class. No.: </label>EAF PAM HD9156.S8.T43