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1. Opening Address

   Rector Magnificus, dear colleagues and friends, ladies and gentlemen. This symposium on “The Solar Spectrum” has been arranged in Utrecht, the...

   A. Unsöld in The Solar Spectrum

   Conference paper 1965
   

2. The sun as a source of interplanetary gas

   C. De Jager in Space Science Reviews

   Article 01 March 1963

3. Structure and Dynamics of the Solar Atmosphere

   In this article we deal only with the photosphere as far as its dynamics is concerned. So we treat successively convection and turbulence of the...

   C. de Jager in Astrophysics III: The Solar System / Astrophysik III: Das Sonnensystem

   Chapter 1959
   

4. Sun

   S. Böhme, W. Fricke, ... G. Zech in Literature 1971, Part 2

   Chapter 1972
   

5. Instruments and Techniques

   There are four Working Groups of Commission 9: ‘Photo-Electric Image Devices’, ‘Large Telescopes’, ‘Data Systems’ and a Joint Working Group of...

   Cornelis De Jager in Transactions of the International Astronomical Union Volume XVA

   Chapter 1973