P.371-8

1999-07

Choice of indices for long-term ionospheric predictions

P.372-11

2013-09

Radio noise

P.453-10

2012-02

The radio refractive index: its formula and refractivity data

P.527-3

1992-03

Electrical characteristics of the surface of the Earth

P.532-1

1992-03

Ionospheric effects and operational considerations associated with artificial modification of the ionosphere and the radio-wave channel

P.678-2

2013-09

Characterization of the natural variability of propagation phenomena

P.832-3

2012-02

World Atlas of Ground Conductivities

P.835-5

2012-02

Reference Standard Atmospheres

P.836-5

2013-09

Water vapour: surface density and total columnar content

P.837-6

2012-02

Characteristics of precipitation for propagation modelling

P.839-4

2013-09

Rain height model for prediction methods

P.1058-2

1999-10

Digital topographic databases for propagation studies

P.1239-3

2012-02

ITU-R reference ionospheric characteristics

P.1510

2001-02

Annual mean surface temperature

P.1511

2001-02

Topography for Earth-to-space propagation modelling