TY  - GEN
AU  - 
AU  - British Standard Institution
TI  - Universal Decimal Classification: English Edition of the Classification Decimale Universelle of the Federation International de Documentation
PY  - 1943///
CY  - London
PB  - British Standard Institution
KW  - Universal Decimal Classification
N1  - Vol. II, Part 1 : Classes : 50 General Works on Pure Science; 51 Mathematics; 52 Astronomy, Geodesy; 53 Physics
ER  -