This research report is one of many associated with Business International, a periodical designed for businessmen with international connections. Its price will certainly put it beyond the reach of most academic Latin Americanists, but those who have access to a large library or an affluent friend in an international concern will find it worth consulting. It presents a succinct description of CACM, its background, operations, and effects on trade, investment, banking, and labor. The account starts with the assumption that the common market experiment has proved a success, but it is not at all tendentious in attitude. Best of all, it is written in everyday English.