of style and presentation -029 Properties derived from other main classes -03 Common auxiliaries of materials -032 Naturally occurring mineral materials -033 Manufactured mineral-based materials -034 Metals -035 Materials of mainly organic origin -036 Macromolecular materials. Rubbers and plastics -037 Textiles. Fibres. Yarns. Fabrics. Cloth -039 Other materials -04 Common auxiliaries of relations, processes and operations -042 Phase relations -043 General processes -043.8/.9 Processes of existence -045 Processes related to position, arrangement, movement, physical properties, states of matter -047/-049 General operations and activities -05 Common auxiliaries of persons and personal characteristics -051 Persons as agents, doers, practitioners (studying, making, serving etc.) -052 Persons as targets, clients, users (studied, served etc.) -053 Persons according to age or age-groups -054 Persons according to ethnic characteristics, nationality, citizenship etc. -055 Persons according to gender and kinship -056 Persons according to constitution, health, disposition, hereditary or other traits -057 Persons according to occupation, work, livelihood, education -058 Persons according to social class, civil status See also Special classifications based on or used in combination with UDC Universal Decimal Classification for Use in Polar Libraries - Scott Polar Research Institute, Cambridge BBC LonClass Global Forest Decimal Classification Other faceted classifications: Bliss bibliographic classification Colon classification Broad System of Ordering Other library classifications Dewey Decimal Classification Library of Congress Classification Russian Library-Bibliographical Classification (BBK) Chinese Library Classification Harvard-Yenching Classification References External links Universal Decimal Classification Consortium About Universal Decimal Classification Multilingual UDC Summary UDC Linked Data Belgian inventions Controlled vocabularies Decimal classification systems Library cataloging and classification