na INLIS000000000027472 20210425122102 0010-1218009310 210425 0 eng Principles of information retrieval / Manfred Kochen KOCHEN, MANFRED Los Angeles : Melvile Publishing, 1974 xix, 203 p. ; 23 cm. ills 025.5 0-471-49697-9 025.5 KOC p INFORMATION STORAGE RETRIEVAL SYSTEMS 1205/83