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  1. pdfNLM Annual Report of Programs and Services, 1989 
    https://www.nlm.nih.gov/.../nlmarchives/annualreport/1989.pdf
    ... 989; 144p., 14p. suppl., 14 cases.(R01LM 04487). Pao ML, Worthen DB. Retrieval effectiveness by semantic and ... 986; 101p.(G08 LM04297). Widman LE, Lee YB, Pao Y-H. Toward the diagnosis of medical causal ...
  2. pdfNLM Annual Report of Programs and Services, 1993 
    https://www.nlm.nih.gov/.../nlmarchives/annualreport/1993.pdf
    ... Jul;68(7):528- 32. (G08 LM 5329). Pao ML. Perusing the literature via citation links. Comput ... Res. 1993:26:143-56. (R01 LM 4177). Pao ML. Term and citation retrieval: a field study. ...