pmc.ncbi.nlm.nih.gov
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pubpeer.com
PubPeer helps search books, ebooks, papers, library records, or reading archives.
pulpmags.org
Pulp Magazines Project helps search books, ebooks, papers, library records, or reading archives.
jakevdp.github.io
Python Data Science Handbook helps search books, ebooks, papers, library records, or reading archives.
launchpad.net
qPDFview helps search books, ebooks, papers, library records, or reading archives.
Research data portal for exploring economic policy, applied economics records, including datasets.
pure.qub.ac.uk
Research data portal for exploring engineering records, including dataset.
queerdigital.com
Search an online collection of books, documents, media and archival records.
theotherpages.org
Quotations Home Page helps search books, ebooks, papers, library records, or reading archives.
rentry.co
Quote Collections helps search books, ebooks, papers, library records, or reading archives.
quran.com
Quran.com helps search books, ebooks, papers, library records, or reading archives.
radar.kit.edu
Research data portal for exploring engineering records, including software.
radicalscatters.unl.edu
Radical Scatters helps search books, ebooks, papers, library records, or reading archives.
database.radioid.net
RadioID database for searching DMR radio IDs, callsigns, repeaters, and user records.
ranobedb.org
RanobeDB helps search books, ebooks, papers, library records, or reading archives.
ranobes.top
Ranobes helps search books, ebooks, papers, library records, or reading archives.
rate.house
rate.house helps search books, ebooks, papers, library records, or reading archives.
book-filter.com
Ratings Filter helps search books, ebooks, papers, library records, or reading archives.
ravebooksearch.com
Rave Search helps search books, ebooks, papers, library records, or reading archives.
re3data.org
re3data helps search books, ebooks, papers, library records, or reading archives.
readthistwice.com
Read This Twice helps search books, ebooks, papers, library records, or reading archives.
readermode.io
Reader Mode helps search books, ebooks, papers, library records, or reading archives.
mybrowseraddon.com
Reader View helps search books, ebooks, papers, library records, or reading archives.
webextension.org
Reader View helps search books, ebooks, papers, library records, or reading archives.