El desarrollo de los mercados regionales en la América Latina : breves antecedentes. - Washington : Unión Panamericana, 1958. - 18 p. ; 21 cm. Issued also in English. LCCN: pa 59000022 Subjects--Topical Terms: Customs unions. Subjects--Geographic Terms: Latin America--Commercial policy. LC Class. No.: HF1508 / .O747