TY - BOOK AU - Harris,Miles F. ED - American Geological Institute. ED - Earth Science Curriculum Project. TI - Investigating the earth SN - 039530167x U1 - 550 PY - 1981/// CY - Boston PB - Houghton Mifflin KW - Earth sciences N1 - "Sponsored by the American Geological Institute and based on the original Earth Science Curriculum Project."; Includes bibliographies & Index ER -