Characteristics of reference transactions--challenges to librarians' roles.
Li
J
J
Biomedical Library, University of South Alabama, Mobile 36617, USA. jli@jaguar1.usouthal.edu
Wu
G
G
D003195:Computer Communication Networks; D016206:Databases, Bibliographic; D005069:Evaluation Studies as Topic; D016247:Information Storage and Retrieval; D020407:Internet; D016245:Librarians; D012380:Role; D012984:Software; D013685:Telecommunications; D013997:Time Factors