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Study and teaching (Secondary), Science, Study and teaching (Elementary), Education / Teaching, Elementary, Experiments, Teaching Methods & Materials - Science & Technology, Education, General, Mathematics, study and teaching (elementary), Measurement, Nature/Ecology, Science, study and teaching (elementary), Study and teaching (Middle school), Teaching Methods & Materials - Workbooks, Technology, study and teaching, Activity programs, Altitudes, Behavior, Bioclimatology, Children's 9-12 - Science, Children's Books/Ages 9-12 Science, Climatic changes, Color, ColorimetryID Numbers
- OLID: OL2928533A
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April 29, 2008 | Created by an anonymous user | initial import |