aimath.org
Institute of Mathematics helps search books, ebooks, papers, library records, or reading archives.
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Search humanities and social data collections and supporting compiled data from USA.
facebook.com
Institutional Access helps search books, ebooks, papers, library records, or reading archives.
irdb.nii.ac.jp
Find published open datasets through filters, categories and keyword search.
intechopen.com
IntechOpen helps search books, ebooks, papers, library records, or reading archives.
inteltechniques.com
OSINT resource hub with search tools, privacy guides, and investigation workflows.
inteltechniques.com
OSINT phone search hub with links and utilities for researching phone numbers across public lookup services.
about.brepolis.net
Bibliographic database for finding publications, citations and scholarly records.
Bibliographic database of nuclear science and technology.
intor.torlakinstitut.com
Search biology data collections and supporting datasets from SRB.
intratext.com
IntraText Digital Library helps search books, ebooks, papers, library records, or reading archives.
intrepidbio.com
Search basic in biology and medicine data collections and supporting datasets from USA.
inventaire.io
Inventaire helps search books, ebooks, papers, library records, or reading archives.
io-archive.org
IOA helps search public documents, archives, records, and research collections.
marum.de
Search atmospheric data collections and supporting datasets from DEU.
ipswich.spydus.com
Online library catalogue for Ipswich Libraries.
isitbig.org
Is it big? helps research websites, public data, search results, or online communities.
isaac.libero.com.au
Online library catalogue for Isaac Libraries.
isfdb.org
ISFDB helps search books, ebooks, papers, library records, or reading archives.
ipnu.repo.nii.ac.jp
Search an online collection of books, documents, media and archival records.
islegitsite.com
Islegitsite helps search threat intelligence, IP reputation, domains, and security investigation data.
ndl.go.jp
Authority responsible for Japan's ISSN records; part of National Diet Library.
bnp.gob.pe
Numbering agency for periodicals and other serials published in Peru.
Numbering agency for periodicals and other serials published in Spain.