TY  - BOOK
AU  - Lang, H. R. 
TI  - Journal of scientific instruments: produced by the institute of Physics with the cooperation of the national physical laboratory 
U1  - 530.7 L20S 1932 Vol-IX 
PY  - 1932///
CY  - London
PB  - Cambridge University Press
KW  - Craftsmanship
ER  -