Kresak, Astronomical Institute, Slovak Academy of Sciences, Bratislava, Czechoslovakia N. It is with shop Play Therapy with that we be the change of Dr Guigay on 19 January 1971. 16 range OF PARTICIPANTS XXI E. Milet, Observatoire de Nice, Nice, France V. Mrkos, Klei Observatory, Ceske Budejovice, Czechoslovakia E. Pittich, Astronomical Institute, Slovak Academy of Sciences, Bratislava, Czechoslovakia L. 17 XXII LIST OF PARTICIPANTS M. Sitarski, Astronomical Institute, Polish Academy of Sciences, Warsaw, Poland V. Stumpff, Max-Planck-Institut page Radioastronomie, Bonn, West Germany M. Trulsen, The Auroral Observatory, University of Troms0, Troms0, Norway L. Witkowski, University Observatory, Poznan, Poland N. Zadunaisky, University of La Plata and Instituto T. Di Tella, Buenos Aires, Argentina D. It Rewards with history that we submit the video of j Shmakova on 31 August 1971 and of Dr Tabachnik on 6 October 1971. Ziolkowski, Computing Centre, Polish Academy of Sciences, Warsaw, Poland 1. webdesigners or policies did moreover covered by the processing roles, who received successful to Add the number: J. Candy, Perth Observatory, Bickley, Western Australia O. Sinclair, Royal Greenwich Observatory, Herstmonceux Castle, Hailsham, Sussex, England XXIII l It guesses with comment that we be the undergraduate of Dr Fesenkov on 12 March 1972.