TY  - GEN
AU  - 
AU  - British Standards Institution, London
TI  - Universal Decimal Classification: English Edition of the Classification Decimale Universelle of the Federation Internationale de Documenation
PY  - 1949///
CY  - London
PB  - British Standards Institution
KW  - Universal Decimal Classification
N1  - British Standard 1000(669), 1949
ER  -