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Executive's guide to online information services
by Ryan E. Hoover
Bok Språk ikke angitt 1984
Online search strategies
edited by Ryan E. Hoover
Bok Bokmål 1982
Online search strategies
edited by Ryan E. Hoover
Bok Språk ikke angitt 1982
The Library and information manager's guide to online services
Ryan E. Hoover ; with Alice H. Bahr ... [...
Bok Engelsk 1980