American Association for the Advancement of Science. (1963). Science - a process approach: Prepared for testing in the early grades. AAAS.
Chicago-viite (17. p.)American Association for the Advancement of Science. Science - a Process Approach: Prepared for Testing in the Early Grades. Washington, DC: AAAS, 1963.
MLA-viite (9. p.)American Association for the Advancement of Science. Science - a Process Approach: Prepared for Testing in the Early Grades. AAAS, 1963.
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