Safety Film Carrier Carrier No: 24476-1-1 Item Id: 92586 Rack No: 6621 Notes: Description: "Describes the place of triangulation, parallax, and the inverse square law for light in geophysics and astronomy. Uses models of the Earth, Moon, and stars. From the PSSC series." -Audiovisual Materials Catalogue 2002-2007 | Conditions x2
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