COLLECTED BY
Organization:
Internet Archive
The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the
Wayback Machine.
This collection contains web crawls performed by the UNT Libraries on the US Federal Executive, Legislative & Judicial branches of government in 2020-2021. The seeds for these crawls came from human-nominated URLs that can be viewed in the
Nomination Tool as well as from
lists generated by volunteers at UC San Diego and Environmental Data & Governance Initiative (EDGI).
The Wayback Machine - https://web.archive.org/web/20201219044019/https://science.nasa.gov/astrophysics/astrophysics-data-centers/smithsonian-nasa-astrophysics-data-system-ads
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Smithsonian/NASA Astrophysics Data System (ADS)
ADS maintains four bibliographic databases containing more than 4.0 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy. The main body of data in the ADS consists of bibliographic records, which are searchable through Abstract Service query forms, and full-text scans of much of the astronomical literature which can be browsed though the Browse interface.
