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Introduction
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Open Science Framework
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ScienceDirect
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Springer Nature
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Wiley
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BIBLIOGRAPHIC
arXiv
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Crossref
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OpenAlex
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Research Organization Registry
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Scopus
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Web of Science
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BUSINESS
U.S. Bureau of Economic Analysis
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U.S. Bureau of Labor Statistics
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U.S. Securities and Exchange
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U.S. Treasury
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World Bank
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GENERAL
National Park Service
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Speedrun.com
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Stack Exchange
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Z39.50
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GIS
GeoNames
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OpenStreetMap
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U.S. Census Geocoding
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USGS National Map
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HUMANITIES
Chronicling America
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SCIENTIFIC
CAS Common Chemistry
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FoodData Central
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NASA Images
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National Weather Service
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PubChem
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PubChem Periodic Table
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PubMed
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SOCIAL SCIENCES
College Scorecard
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Congress.gov
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U.S. Census Data
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USA Spending
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