Ertel, Hans, 1904-1971. The Earth and the cosmos : (the legacy of Hans Ertel) / edited and collected by Wilfried Schrd̲er and Hans-J rgen Treder.

Ertel, Hans, 1904-1971.

The Earth and the cosmos : (the legacy of Hans Ertel) / edited and collected by Wilfried Schrd̲er and Hans-J rgen Treder.

Ertel, Hans, 1904-1971.

Cosmology

Geophysics

Earth.

1933-1966.

Schrd̲er, Wilfried.

Treder, Hans-J rden.

International Association of Geomagnetism and Aeronomy