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National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards
National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards
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A framework for K-12 science education
National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards
A framework for K-12 science education
National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards · 2012