73788771
Mar 24, 1989
Jun 12, 1990
PRERECORDED AUDIOTAPES AND VIDEOTAPES IN THE EDUCATION AND SELF-HELP FIELDS FOR PERSONAL, BUSINESS AND SOCIAL IMPROVEMENT
Electrical and Scientific ApparatusEDUCATIONAL MANUALS, PROGRESS JOURNALS AND STUDY GUIDES FOR USE IN THE EDUCATION AND SELF-HELP FIELDS FOR PERSONAL, BUSINESS AND SOCIAL IMPROVEMENT
Paper Goods and Printed Matter