1. Vacuum Equipment and Techniques;Guthrie,1949
2. Leak Detection by Vacuum Techniques;Cross;Research,1956
3. Testing of Vacuum Equipment and Hermetically Sealed Components for Leak Tightness;Steckelmacher;Schweizer Archiv,1961
4. Vacuum Techniques in the Atomic Energy Industry;Kronberger,1958
5. Gas Analysis by Measurement of Thermal Conductivity;Daynes,1933