Operating a trade information service : a handbook for developing countries. - Geneva : International Trade Centre UNCTAD/GATT, 1975. - xi, 179 p. : ill. ; 23 cm. LCCN: 82212150 Subjects--Topical Terms: Foreign trade promotion Dış ticaret promosyonu LC Class. No.: HF1417.5 / .O64 1975 Dewey Class. No.: 351.82 / OPE 1975