HISTORIA DE LA EDUCACION AMBIENTAL

Realizado por Hugo Gerardo Gomez C

Events

19 September 1949
Mayo 1968
13 January 1971
5 June 1972
1 September 1973
1 September 1975
1 September 1975
1 September 1977
1 September 1987
1 September 1987
1 September 1991
1 September 1992
1 September 1992
1 September 1992
1 September 1994
1 September 1994
1 September 1997
1 September 2002
20 June 2012 - 21 June 2012