TY  - BOOK
AU  - Yarwood, J.
TI  - High vacuum technique: theory, practice, industrial applications and properties of materials
U1  - 621.55 21st ed.
PY  - 1948///
CY  - London
PB  - Chapman and Hall
KW  - Vacuum pumps
KW  - Vacuum technology
N1  - 130-40 includes index
ER  -