TY  - GEN
AU  - 
AU  - British Standards Institution
TI  - Universal Decimal Classification
PY  - 1972///
CY  - London
PB  - British Standards Institution
KW  - Universal Decimal Classification
N1  - U.D.C. 68/681.4; Finished articles in general, precision mechanisms, horology, instrumentation, data processing, optical apparatus
ER  -