Accounts of the Republic of Sri Lanka:department of agriculture-potato extension scheme,annual report and audited  accounts for the year 1968-69 

 - Colombo  Govrrnment press  1977 
 - variable pages                                                                  Trading accounts series No. 2 of 1976 
<br/><br/><label>Dewey Class. No.: </label>657.835  / DEP