arxiv.org
Research paper on integrating data from web databases that are not directly indexed by search engines.
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shk.repo.nii.ac.jp
Digital library for searching books, documents, images and online collections.
preterhuman.net
Higher Intellect helps search books, ebooks, papers, library records, or reading archives.
hdu.repo.nii.ac.jp
Find digitized publications and collection items through an online library.
hirosakiuhw.repo.nii.ac.jp
Browse digitized texts, images, archives and cataloged cultural materials.
hirosaki.repo.nii.ac.jp
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hirogaku-u.repo.nii.ac.jp
Digital library for searching books, documents, images and online collections.
shudo-u.repo.nii.ac.jp
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hispana.mcu.es
Find digitized publications and collection items through an online library.
histography.io
Histography is an educational resource for documentaries, courses, books, reference material, or self-learning.
historiatransviada.com
Find digitized publications and collection items through an online library.
collections.fes.de
Newspaper portal of the Friedrich-Ebert-Stiftung.
historicaltechtree.com
Historical Tech Tree is an educational resource for documentaries, courses, books, reference material, or self-learning.
hmongstudies.library.wisc.edu
Online index documenting Hmong studies in publications from 1975 to 2018.
do-bunkyodai.repo.nii.ac.jp
Browse digitized texts, images, archives and cataloged cultural materials.
hmjc.repo.nii.ac.jp
Browse digitized texts, images, archives and cataloged cultural materials.
hus.repo.nii.ac.jp
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hokurikugakuin.repo.nii.ac.jp
Digital library for searching books, documents, images and online collections.
hokuriku.repo.nii.ac.jp
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hokusei.repo.nii.ac.jp
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hokusetsu-archives.jp
Browse digitized texts, images, archives and cataloged cultural materials.
hokusho.repo.nii.ac.jp
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hollis.harvard.edu
Bibliographic database run by Harvard University Library.
holybooks.com
HolyBooks helps search books, ebooks, papers, library records, or reading archives.