Unit resource book:
Unit resource book: waves, sound, and light/
- Evanston, Illinois: A Houghton Mifflin Company, [c2007]
- viii, 310 pages: illustrations; 28 cm.
- McDougal Littell Science .
9780618406616
Science--Study and teaching (Middle school)
DK12 507 / Un58
9780618406616
Science--Study and teaching (Middle school)
DK12 507 / Un58
