@Article{ GUTIERREZ:270-280,

author = { JOSE GUTIERREZ PEREZ } ,

title = { Water as Focus of Problem-Based Learning: An Integrated Curricular Program for Environmental Education in Secondary School },

journal = { US-China Education Review. A },

year = { 2011 },

volume = { 1 },

pages = { 270-280 },

doi = { http://http://www.davidpublishing.org/journals_info.asp?jId=511# },

}