Richard Haijer Member LWSK / guest Name R.J.E. Haijer Telephone +31 71 527 5737 E-mail r.haijer@inter.nl.net Member LWSK / guest Science Sterrewacht Sterrewacht Work address Gorlaeus Building Einsteinweg 55 2333 CC Leiden Contact +31 71 527 5737 r.haijer@inter.nl.net Geen relevante nevenwerkzaamheden