TY  - BOOK
T1  - High vacua;principles, production, and measurement.
DA  - 1947.
CY  - New York,
AU  - Jnanananda,
CN  - QC166 .C5
CN  - QC166
PB  - D. Van Nostrand Co.,
PP  - New York,
PY  - 1947.
ID  - 63239
KW  - Vacuum pumps.
KW  - Vacuum-gages.
KW  - Vacuum.
TI  - High vacua;principles, production, and measurement.
ER  -