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| electron Tube Data sheets |
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| EMI documents |
| (up)date | item | size |
| 2013-09-21 | Photo Multiplier Tubes 1970. Thanks to Alan Sayer. | 13,632,373 bytes |
| 2013-09-21 | Photo Multiplier Tubes Supplement 1972. Thanks to Alan Sayer. | 13,632,373 bytes < |