SEARCHING (Continued) a#39;expert systemsa#39;; the latter will follow on from Belkin and Oddya#39;s Anomalous State of Knowledge based information retieval proposal. ... User surveys. Analysis. Document structures. Related to Problem statements. Pilot studies 81/1/384 * Investigations in .... Predicast 81/1/388 An evaluative comparison of manual and on-line reference retrieval from certain products of predicast.