The library possesses a hybrid collection containing more than a million issues both in paper and digital format which are freely available in open access to the reader in the assigned areas. More than 60 computers distributed within the open access collection area facilitate consultations in the catalogue and the electronic collection. The physical collection is the result of the merging of eight libraries of CSIC in Madrid specialized in different areas of human and social sciences, which has allowed us to bring together and offer both a broad and specialized document collection.
The library offers a collection of more than 300,000 copies in open access and its entire journal library.
The complementary collections as well as those which require specific conservation measures are held in storage.