检索条件: International Conference on Research and Development in Information Retrieval ( 任意词 )
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SIGIR `89 (12th : 1989 : Italy):proceedings of the 12th annual international ACMSIGIR conference on research and development in information retrieval , Cambridge, Mass. 1989 : held in cooperation with AICA-GLIR(Italy)
ed. by N. J. Belkin and C. J. van Rijsbergen.Association for Computing Machinery,1989.
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