National Report on environment
National Report on environment For the United Nations Conference on Environment and Development SUMMARY /
Secretary of social Development.
- 1a ed.
- México : Secretary of social Development, 1992
- 32 p.: ils.; 21 cm.
Incluye índice
968838111x
Ecología --Congresos, Conferencias etc.
Incluye índice
968838111x
Ecología --Congresos, Conferencias etc.