26th International Cosmic Ray Conference

27 Euterpe CCD Spectrum

27 KHz atmospherics observed at sunset and sunrise in South Africa

27 Vir: a possible delta Scuti star

27-day cosmic ray modulation with allowance for the radial breakdown of the azimuthal asymmetry of the solar wind

27-day fluctuations in the ionospheric D-region

27-Day Recurrence and Long Term Modulation of Cosmic Ray Intensity

27-DAY Recurrence in the Cosmic Ray North-South Anisotropy at High Rigidities

27-Day Recurrence of Diurnal Cosmic-Ray Variations

27-Day Recurrences of Enhanced Daily Variations of the Cosmic Ray Intensity during 1973 - 1974

27-DAY Recurrences of Enhanced Solar Diurnal Variations in 1973-1974 and its Relation to High-Speed Streams from Coronal Holes

27-DAY Recurrent Effects in Cosmic Ray Anistropies during Solar Cycle 20

27-day variation in cloud amount and relationship to the solar cycle

27-day variation of solar radio flux at 10.7 cm and 20 cm

27-day variations in cosmic-ray intensity and anisotropy for different periods of solar activity

27-day variations in galactic cosmic rays in 1976.

27-day variations observed in solar U.V. (120-300 nm) irradiance

27-day variations of cosmic rays for the minima epochs of solar activity: experimental and 3-D drift modelling results

27-Day Variations of Cosmic-Ray Anisotropy

27-Day Variations of the Galactic Cosmic Ray Intensity and Anisotropy