1870-199X 1870-199X S1870-199X2006000100042 10.22201/fo.1870199xp.2006.10.1.15934 Mexico Mexico Mexico Mexico 00 00 2006 00 00 2006 10 1 42 48

1. 1997 2. 1998 3. 1998 4. 1999 5. 1996 76 115-8 6. 1992 68 940-2 7. 1997 8. 1983 9. 1983