TY  - BOOK
ED  - Great Britain:National Physical Laboratory
TI  - Notes on applied science
U1  - 542.3 
PY  - 1962///
CY  - London
PB  - HMSO
KW  - Chemical laboratory
KW  - Measuring apparatus
N1  - No.7-Balances,Weights and Precise laboratory weighing
ER  -