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Source National Science Digital Library (NSDL)
Content type Text ♦ Video ♦ Image ♦ Simulation
Date Created 2005-12-17
Language English
Education Level I to IV ♦ V to VIII ♦ IX and X ♦ Career/Technical Study
Learning Resource Type Activity ♦ Lab Material ♦ Photograph ♦ Simulation
Rights License Custom Permissions