This catalogue records information in e-journals, e-books, databases, and printed material about themes in the field of the international law. Especially, a large part of the print collection of the Peace Palace Library is searchable through this catalogue. This collection consists of books and materials since 1913.

ICSD is the world’s largest database for fully identified inorganic crystal structures. It currently contains about 193,000 peer-reviewed data entries including their atomic coordinates. Updates are made twice a year (in spring and in fall) with data taken from scientific journals and other sources. Thanks to these many heterogeneous data sources the database has a wide coverage. ICSD is also updated retroactively. The oldest records date back to the year 1913 and contain information from publications by William Henry Bragg and his son.

The series comprises articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the structure and properties of materials. Emphasis is given to symmetry, diffraction methods and techniques of crystal structure determination, and the physical and chemical properties of crystals. Each volume also contains discussions of theory, practical explanations and examples, all of which are useful for teaching. The following volumes are available: * Volume A - Space-group symmetry * Volume A1 - Symmetry relations between space groups * Volume B - Reciprocal space * Volume C - Mathematical, physical and chemical tables * Volume D - Physical properties of crystals * Volume E - Subperiodic groups * Volume F - Crystallography of biological macromolecules * Volume G - Definition and exchange of crystallographic data

The RISM database references mostly historical music manuscripts, the majority of them originated before 1800. - The original sources are available from the libraries, music archives, and private collections as indicated in the RISM database. These institutions can often be approached for reproductions. - About 700,000 entries (June 2010). -- Die RISM-Datenbank weist hin auf vor allem historische handschriftliche Noten, die Mehrzahl davon entstanden vor 1800. - Die Originale können in den angegebenen Bibliotheken, Musikarchiven oder Privatsammlungen eingesehen werden. Dort können oft auch Reproduktionen herstellen gelassen werden. - Ca. 700.000 Einträge (Juni 2010).

The German National Library of Science and Technology (TIB) ‒ Leibniz Information Centre for Science and Technology and University Library is a central specialised library, responsible for operating the German National Library for technology, architecture, chemistry, information technology, mathematics and physics as well as the University Library for Leibniz Universität Hannover. As the world's largest specialised library in its fields, the library has excellent collections of technical and scientific specialist and research information.