Geocaching – Marz-April 2013
Geocaching – Januar-Februar 2013
National Geographic USA – August 2013
National Geographic France – Aout 2013
ASIAN Geographic – Issue 5, 2013
Asian Geographic JUNIOR – Issue 4, 2013
Asian Geographic Junior – Issue 3, 2013
National Geographic USA – July 2013
National Geographic France – Juillet 2013
ASIAN Geographic – Issue 4, 2013
Asian Geographic Junior – Issue 4, 2012
Canadian Geographic – June 2013
National Geographic USA – May 2013
National Geographic USA – February 2006
National Geographic USA – April 2006
National Geographic USA – March 2009
Canadian Geographic – May 2013
National Geographic USA – June 2005
National Geographic USA – January 2005
National Geographic USA – March 2010
National Geographic USA – February 2009
National Geographic USA – June 2006
National Geographic USA – January 2006
National Geographic USA – January 2011
National Geographic USA – October 2005
National Geographic USA – May 2006
National Geographic USA – July 2006
National Geographic USA – August 2010
National Geographic USA – September 2009
National Geographic USA – February 2010
National Geographic France – Hors Serie 2 2012
National Geographic USA – October 2012
National Geographic France – Mai 2013
National Geographic France – Avril 2013
National Geographic USA – November 2012
National Geographic USA – July 2012
National Geographic USA – April 2009
National Geographic France – Juin 2012
National Geographic USA – December 2010
National Geographic USA – April 2013
