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Study of the lower ionosphere using a rocket-borne riometer
Study of field-aligned ionospheric E-region irregularities and sporadic E at HF
Lateral waves in three-layered media
Solar occultation sounding of pressure and temperature using narrowband radiometers
Chemical and engineering aspects of odorized natural gas storage in porous media (2)
Aerial photography and the use of helicopters in hydrography
Rocket experiment of VLF and MF radio wave measurement by using a single loop antenna