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Reference services (Libraries) -- United States -- Case studies
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0
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Reference services (Libraries) -- United States -- Case studies
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0
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Reference services (Libraries) -- United States -- Handbooks, manuals, etc.
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0
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Reference services (Libraries) -- United States -- Handbooks, manuals, etc
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0
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Reference services (Libraries) -- Washington (D. C.) -- History -- 20th century.
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0
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Reference services(Libraries) -- United States
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0
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Reference sources
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0
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Reference sources -- United States -- Catalogs -- Juvenile literature
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0
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Reference Standards
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Reference Standards
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0
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Reference Values
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0
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Reference Values -- Atlases
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0
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Reference Values -- Congresses
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0
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Reference Values -- Handbooks
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0
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Reference Values -- handbooks
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0
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Reference values (Medicine).
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0
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Reference values (Medicine) -- Charts, diagrams, etc
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0
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Reference values (Medicine) -- Congresses
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0
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Reference values (Medicine) -- Handbooks, manuals, etc.
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0
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Reference values (Medicine) -- Handbooks, manuals, etc
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0
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