http://www.answers.com/topic/alexander-von-humboldt
http://www.britannica.com/eb/article-9041488
http://en.wikipedia.org/wiki/Alexander_von_Humboldt
_ The sailing ship Alexander von Humboldt in Szczecin
http://www.youtube.com/watch?v=byoSl2x3S_k
_ Alexander von Humboldt
http://www.youtube.com/watch?v=ANquBturtCs
_ Segeln auf der Alexander von Humboldt
http://www.youtube.com/watch?v=GIXVE_nhZRo
_ Alexander von Humboldt wpłynął do Szczecina
http://www.youtube.com/watch?v=AivYE4q4lms
_ Multimedia in der AvH Rüsselsheim
http://www.youtube.com/watch?v=5Eu3UTe8ivA
Planetarium **
http://astro.nineplanets.org/astrosoftware.html
http://www.planetarium-nuernberg.de/
http://www.armaghplanet.com/
http://www.planetarium.torun.pl/
http://www.planetarium-freiburg.de/
http://www.beholder.co.uk/planetarium/
http://haydenplanetarium.org/index.php
http://www.planetarium.cz/
_ Planetarium
http://www.youtube.com/watch?v=cGLRVnE7GBY
_ Sega Homestar Planetarium Pro: NOW at Kilian-Nakamura.com
http://www.youtube.com/watch?v=qnpFhUkysXQ
_ HeaRt - Planetarium
http://www.youtube.com/watch?v=seZ4Ot3vCbQ
_ Charlie Rose - ROSE CENTER PLANETARIUM (AT THE AMERICAN
http://video.google.com/videoplay?docid=9174999225287633004