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 [Discover] Search Newspaper Directory - Chronicling America (Library of Congress) http://www.loc.gov/chroniclingamerica/search_directory_advanced.html (newspapers archives reference)
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 [Discover] Johns Hopkins ABX guide http://hopkins-abxguide.org/ (reference medicalknowledge infectiousdisease pda)
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 [Discover] Sysinfo.org http://www.sysinfo.org/startuplist.php (windows processes taskmanager tweaks)
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 [Discover] Bible Tools http://bibletools.org/ (bible reference christian study)