| electron Tube Data sheets | 
       
   | 
       
     | ||
       
     | Mashpriborintorg documents | 
| (up)date | item | size | 
| 2004-01-05 | Mashpriborintorg - Soviet tube data book ☆Franz Hamberger☆ | 7,459,476 bytes | 
| 2022-09-16 | Mashpriborintorg - Electronic Tubes II, 202 pages. | 23,190,471 bytes |