The basic principle underlying the organization of any library is to describe the documents it contains so that they may be located. All libraries create sets of records which describe the documents in their collections. Catalogs are sets of records to documents that share a location. Indexes are sets of records to documents that share some other attribute (generally subject matter). Here you will find the most comprehensive and significant broad disciplinary article indexing databases for international linguistics and language science scholarship. Subject indexes are ordered by disciplinary relevance.