National Geographic Magazine 1961-08, August
National Geographic Magazine 1970-12, December
National Geographic Magazine 1954-04, April
National Geographic Magazine 1950-11, November
National Geographic Magazine 1969-11, November
National Geographic Magazine 1967-01, January
National Geographic Magazine 1961-12, December
National Geographic Magazine 1964-03, March
National Geographic Magazine 1962-10, October
National Geographic Magazine 1958-07, July
National Geographic Magazine 1959-03, March
National Geographic Magazine 1955-07, July
National Geographic Magazine 1969-09, September
National Geographic Magazine 1969-10, October
National Geographic Magazine 1967-09, September
National Geographic Magazine 1962-05, May
National Geographic Magazine 1961-07, July
National Geographic Magazine 1961-09, September
National Geographic France – Mars 2015
National Geographic Italia – Marzo 2015
National Geographic Magazine 1953-02, February
National Geographic Magazine 1952-08, August
National Geographic Magazine 1955-04, April
National Geographic Magazine 1970-08, August
Iceland Magazine – March 2015
National Geographic Magazine 1962-06, June
National Geographic Colombia – 02 Febrero 2015
National Geographic Magazine 1952-03, March
National Geographic Magazine 1957-10, October
National Geographic Portugal – Marco 2015
National Geographic Magazine 1957-06, June
National Geographic Magazine 1950-07, July
National Geographic Turkey – Mart 2015
National Geographic N 186 – Mars 2015
National Geographic Magazine 1960-08, August
National Geographic Magazine 1950-12, December
National Geographic Magazine 1970-04, April
National Geographic Magazine 1958-12, December
National Geographic Magazine 1960-03, March
Scottish Islands Explorer – March-April 2015
