THE HEROIN TRAILS FROM THE MIDDLE EAST AND MEXICO TO THE UNITED STATES ARE DESCRIBED FIRST, FOLLOWD BY AN OUTLINE OF THE ROUTE TRAVELLED BY MORPHINE FROM THE 'GOLDEN TRIANGLE' (LAOS, THAILAND, AND BURMA) TO HONG KONG. THE ROLE OF HOLLAND AS A DISTRIBUTION SOURCE FOR HEROIN ORIGINATING IN THE FAR EAST, PARTICULARLY CHINA, IS ALSO EXAMINED. A LOOK AT THE DRUG SITUATION IN SPAIN EXPLORES THE RISE IN DRUG TRAFFICKING AND HEROIN USE BY SPANIARDS, POLICE EFFORTS IN DETECTING DRUG TRAFFIC AND ARRESTING DRUG LAW OFFENDERS, AND RECOMMENDATIONS FOR CHANGES IN THE DRUG CONTROL PROCEDURES, INCLUDING CLOSER ATTENTION TO PERSONS ENTERING SPAIN FROM THE FAR EAST AND INCREASED SURVEILLANCE OF CHINESE RESTAURANTS AND OTHER AREAS FREQUENTED BY ORIENTALS. --IN SPANISH...ELW