]> 2024-03-29T12:58:59+00:00 1973 ProblemsInIR 0 en 2021-06-24T02:35:31Z 2459389.6079977 1973 ProblemsInIR 10.1016/0020-0271(73)90019-3 Problems in Information Retrieval: Logical jumps in the expression of information 0 0 table 1 [[:1973 ProblemsInIR]] 1973 ProblemsInIR