Analysis of ionospheric drifts utilitizing data obtained with closely spaced receivers /
Donald G. Yerg . -
- Bedford, Mass. : Prepared for Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, 1964.
- vol. : ill., diagrs. -
- (Contract no. AF 19 (604)-8337. Project no. 8605. Task no. 860502). .