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keyword: gyro-TWT – 3 free books.
These books are not included in Project Gutenberg.
New Type of sub-THz Oscillator and Amplifier Systems Based on Helical-Type Gyro-TWTs
Alexander Marek
High-Frequency Vacuum Electron Devices
Jinjun Feng et al. (editors)
Design, Technologies and Applications of High Power Vacuum Electronic Devices from Microwave to THz Band
Mikhail Glyavin (editor)