Earth Science Curriculum Project, & American Geological Institute. (1973). Investiguemos la tierra. Bogotá, Colombia: Editorial Norma.
Chicago Style CitationEarth Science Curriculum Project, and American Geological Institute. Investiguemos La Tierra. Bogotá, Colombia: Editorial Norma, 1973.
MLA CitationEarth Science Curriculum Project, and American Geological Institute. Investiguemos La Tierra. Bogotá, Colombia: Editorial Norma, 1973.
Warning: These citations may not always be 100% accurate.