01	BIBLIOGRAPHY
01.2	General bibliographies. National bibliographies
01.21	Publishers' and retailers' catalogues
01.22	Thesis and dissertation catalogues
01.3	Local bibliographies
01.4	Personal bibliographies
01.5	Catalogues of special subjects
01.51	Philosophy. Psychology. Paranormal phenomena
01.52	Religion
01.53	Society
01.54	Geography. Travel. Ethnology
01.55	Natural sciences. Mathematics. Medicine
01.56	Technology. Industry. Handicrafts. Agriculture and forestry. Domestic science. Business economy. Traffic
01.57	Arts. Athletics
01.58	Belles-lettres. Literary studies. Linguistics
01.59	History
01.7	Joint library catalogues
01.8	Individual library catalogues