APPROXIMATELY 1200 PROGRAMS ARE LISTED WITH TITLE, AUTHOR, DATE OF PUBLICATION, PUBLISHER, PRICE, COUNTRY OF ORIGIN, DATE OF LATEST EDITION IF REVISED, MONTHLY RENTAL PRICE, TYPE OF PROGRAM, NUMBER OF FRAMES, NUMBER OF PAGES IF A BOOK PROGRAM, TARGET POPULATION, STUDY TIME, AVAILABILITY FOR MACHINE USE, AND SUPPLEMENTARY MATERIALS WITH THEIR PRICES. PROGRAMS ARE ARRANGED AND INDEXED BY SUBJECT. A SECTION BY JAMES HARTLEY ENTITLED "SOME GUIDES FOR EVALUATING PROGRAMMES" INCLUDES GUIDES FOR USER EVALUATION, A DESCRIPTION OF PROGRAM VALIDATION PROCEDURES, AND A DISCUSSION OF THE RESULTS OF EXPERIMENTAL COMPARISONS BETWEEN PROGRAMS AND CONVENTIONAL INSTRUCTION. A LIST OF PUBLISHER ADDRESSES AND 33 PAGES OF ADVERTISING ARE INCLUDED. THIS DOCUMENT WAS PUBLISHED BY THE ASSOCIATION FOR PROGRAMMED LEARNING, 27 TORRINGTON SQUARE, LONDON WC1. (BB)