Tariff and non-tariff measures in the world trade of petrochemical p roducts /    
prepared by the UNCTAD secretariat for UNIDO. 
 - Oxford :   United Nations Industrial Development Organization,   1 985. 
 - iv, 23 p. :    ill. ;    30 cm. 
 - Sectoral working paper series ;   no. 37. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum chemicals industry ----Developing countries.----