| Institution: | (1) Ond ejov Observatory, Czechoslovakia;(2) Sonnenborgh Observatory, Utrecht;(3) Technical University, Delft;(4) Radio-Observatory, Dwingeloo;(5) Astrophysical Institute of the Free University, Brussels;(6) Collège de France, Paris;(7) Netherlands Institute for Sea Research, The Netherlands;(8) Sternberg Astronomical Institute, Moscow;(9) Observatory Sonnenborgh, Utrecht;(10) Institute of Geological Sciences, Utrecht;(11) Laboratory for Space Research, Utrecht;(12) Faculty of Law, University of Utrecht, Utrecht, The Netherlands;(13) Observatoire de Paris, Meudon;(14) Institute for Space Aeronomy, Brussels;(15) Sterrewacht, Leiden;(16) Tel Aviv University, Tel Aviv, Israel;(17) South African Astronomical Observatory, Cape, South Africa;(18) Houten, The Netherlands |
