narrow selection. Statistics on economics, politics and social science. Strict Selection University textbooks for the humanities and social sciences in Eastern European languages, unless other scientific literature [...] bibliographies, encyclopaedias, lexicons, dictionaries, address books, handbooks, etc., if they are of scientific interest for the humanities and social sciences. Source literature: for literary sources, more [...] from the humanities and social sciences, including literary journals. Biographies, commemorative publications, conference literature from the humanities and social sciences. Refined Selection Research l