Reference

Environmental, Scientific, & Technical Reference
	Martindale's Calculators Online
	Conversion of Units (Berlin Institute of Chemistry)
	HowStuffWorks.com
	Terms of Environment (EPA)
	USGS Geographic Names Information System (GNIS)
	USGS Geologic Names Database (GEOLEX)
	USGS National Geologic Map Database
	U.S. Patent & Trademark Office
	Water Words
	WhatIs (encyclopedia of high-tech terms and acronyms)
Government Reference
	Code of Federal Regulations
	Environmental Regulations (Illinois Pollution Control Board)
	Find-It! Illinois
	Illinois General Assembly
	U.S. Government Printing Office
	United States Postal Service Zip Code Lookup
General Reference
	Answers.com
	Ask Jeeves
	Bartleby.com
	Biography.com
	Books in Print
	Britannica Online
	CIA World Factbook
	Dictionary.com
	Encyclopedia.com
	Farmer's Almanac
	How Far Is It?
	Infoplease
	Internet Acronym Server (Acronym search)
	Library Spot
	MapQuest
	Merriam Webster
	NewsBank Infoweb
	Oxford English Dictionary
	Translating Dictionaries
	i-Tools Research It
	Refdesk.com
	Schemes for Organizing the Web
	Time and Date.com
	UIUC Web-Based Reference Sources
	Wikipedia
	yourDictionary.com
Business Reference
	County Business Patterns
	Environmental Financial Tools (EPA)
	Internal Revenue Service
	Thomas Register
	Mortgage-X Mortgage Information Service
	Universal Currency Converter (Xenon Laboratories)
	Yahoo! Finance - Currency Converter
	Yellow Page City

Last modified: 16 March 2006

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