Elementary school science for the 90's - Loucks-Horsley, Susan; Association for Supervision and Curriculum Development; Network, Inc.; National Center for Improving Science Education (U.S.) Biological Sciences Curriculum Study (Alexandria, VA Association for Supervision and Curriculum Development, 1990)
"The National Center for Improving Science Education, a partnership of the Network, Inc., and the Biological Sciences Curriculum Study (BSCS)"
Keywords: Science -- Study and teaching (Elementary) -- United States