Virtual Resource Systems - References Online

Reference	Reference
Aviation Reference Desk	National Park Reference Desk
CIA World Fact Book	Dictionary, Glossary, Encyclopedia
Educator’s Reference Guide	Overseas Living Reference Desk
EurekAlert	RefDesk.com
Global Reference Desk	ReferenceDesk.org
HubbleSite Reference Desk	Virtual Reference Desk
Martindales Reference Desk	World Desk Reference

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