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  • Book cover of Project Echo

    Project Echo: The Dual Channel 2390-Mc Traveling-wave Maser

    Robert Woodman DeGrasse

     · 1961

  • Book cover of Frequency Mixing in Microwave Beam-type Devices

    Frequency Mixing in Microwave Beam-type Devices

    Robert Woodman DeGrasse

     · 1958

Coded by Alvin Chou