Ionospheric absorption: 1964-1965, De Bilt, Netherlands.
Published: 1968
Place of publication: De Bilt
Language: eng
Number of pages: 75
Subjects: Ionospheric radio wave absorption -- Observations.
Notes: At head of title: Koninklijk Nederlands Meteorologisch Instituut.
"Publicatienummer: K.N.M.I. 149."