The aim of the DOAJ is to increase the visibility and ease of use of open access scientific and scholarly journals, thereby promoting their increased usage and impact. The DOAJ aims to be comprehensive and cover all open access scientific and scholarly journals that use a quality control system to guarantee the content. In short, the DOAJ aims to be the one-stop shop for users of open access journals.

v.1 (1889) - 55 (1929) of monographic series published by USGS as PDF

Users of the ALA website can combine species distribution information with mapping tools, identification keys, photos, names lists, sensitive data service (coming) and published literature.

The directory is open to all publishers who publish academic, peer reviewed books in Open Access and should contain as many books as possible, provided that these publications are in Open Access and meet academic standards.

Bibliographic Index of an OCLC collection of scholarly journals

Digitized materials from the Bibliothèque nationale de France.

PERIODIC is a bibliographic database created in 1978 at the National Autonomous University of Mexico (UNAM). The database is updated daily and more than 10,000 records are added each year. It offers about 350 000 bibliographic records of original articles, technical reports, case studies, statistics and other documents published in about 1500 journals from Latin America and the Caribbean, specializing in science and technology.

Our single search box allows you to freely explore millions of resources from leading national and research libraries across Europe. We have more than 200 million resources waiting to be discovered. You can search over 24 million pages of full-text content, 18 million digital objects and 119 million bibliographic records within Europe. These digital resources are supplied to us by our prestigious network of institutions, including 48 national libraries in Europe and an increasing number of research libraries, such as the University of Oxford’s Bodleian Library.