Thal Jonas Educational employee Name T.J. Jonas Telephone +31 71 527 8517 E-mail t.j.jonas@hortus.leidenuniv.nl Educational employee Science Hortus Botanicus Hortus Botanicus Work address Hortus botanicus Rapenburg 73 2311 GJ Leiden Room number 1.03 Contact +31 71 527 8517 t.j.jonas@hortus.leidenuniv.nl Thalents Leiden Educatie Share on Facebook Share on X Share on LinkedIn Share by WhatsApp Share by Mastodon