National Geographic : vol. 179, no. 3, March 1991 /
| Beste egile batzuk: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | ingelesa |
| Argitaratua: |
Washington, EUA :
National Geographic Society,
1991, c1991
|
Antzeko izenburuak: National Geographic :
- National Geographic : vol. 179, no. 2, February 1991 /
- National Geographic : vol. 179, no. 4, April 1991 /
- National Geographic : vol. 179, no. 5, May 1991 /
- National Geographic : vol. 179, no. 6, June 1991 /
- National Geographic : vol. 179, no. 1, January 1991 /
- National Geographic : vol. 180, no. 3, September 1991 /