“…Whether we examine the maps for 1972-1979, a viable area in all periods. Borgman, Fidel, and Bates represent practical retrieval, and Dervin and Ingwersen 1980-1987, or 1988, those interested in aspects of retrieval form a large cluster at right, and those interested represent user theory. But note the contingent, retrievalists all, who also load on user theory: Belkin, Saracevic, in aspects of literatures and communication form another at left.…”