Lignende værker: National Geographic :
- National Geographic : vol. 170, no. 1, July 1986 /
- National Geographic : vol. 170, no. 2, August 1986 /
- National Geographic : vol. 170, no. 3, September 1986 /
- National Geographic : vol. 170, no. 4, October 1986 /
- National Geographic : vol. 170, no. 5, November 1986 /
- National Geographic : vol. 169, no. 6, June 1986 /