00000cam a22000003a 4500 UP-8027390931313822492 Buklod 20100825140721.0 m |o d | ta 100825s1972 xx d r |||| u| 0837163226 (iLib)UPVIS-00017614194 jcs 08-25-10 eng Z 695 S89 1972 Subject retrieval in the seventies new directions edited by Hans (Hanan) Wellisch and Thomas D. Wilson. Westport, Connecticut Greenwood Publishing Company 1972. 180 p. (Proceedings of an international symposium held at the Center of Adult Education, University of Maryland, College Park, May 14 to 15, 1971.) Technical section Subject headings -- Congresses. Classification -- Books -- Congresses. Information storage and retrieval systems -- Congresses. UPVIS UPV-ML Z 695 S89 1972 Book