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(up)date item size
2017-11-20 Electron Devices, Electrinic Systems, 1963. Noise Generators, Traveling Wave Amplifiers, Tunable Filters, Backward Wave Amplifiers (385 pages) 149,545,201 bytes
2019-04-06 Microwave Devices Technical Data, 1972. (654 pages) 111,537,405 bytes