CLASS is a bibliographic database created in 1975 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 articles, essays, book reviews, literature reviews, short notes, editorials, biographies, interviews, statistics and other documents published in about 1500 journals from Latin America and the Caribbean, specializing in social sciences and humanities.
For the purpose of verifying publication names in the Specimen Database and the Gray Index, the Herbaria maintain an index of botanical and cryptogamic publications. It is a unique compendium of bibliographic references for books, journals, and exsiccatae, dependent primarily on the standard print sources for botanical literature.
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.