@book{bhlitem225841, title = {ECOfronteras }, volume = {v.11:no.31 (2007:Aug)}, copyright = {In copyright. Digitized with the permission of the rights holder.}, url = {https://www.biodiversitylibrary.org/item/225841}, note = {https://www.biodiversitylibrary.org/bibliography/119351}, publisher = {San Cristóbal de Las Casas, Chiapas, México, El Colegio de la Frontera Sur, 1997-}, author = {ECOSUR (Institution : Mexico)}, year = {2007}, pages = {44}, keywords = {Conservación de la diversidad biológica|desarrollo sostenible|Historia social|Mexico|población|Publicaciones seriadas|Salud|Sistemas de producción|}, }