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[PDF] Prudent practices in the laboratory : handling and disposal of chemicals National Research Council (USA). Committee on Prudent Practices for Handling, Storage, and Disposal of Chemicals in Laboratories.; National Research Council (USA). Commission on Physical Sciences, Mathematics, and Applications. Board on Chemical Sciences and Technology  × 1 $19.99
[PDF] Serving the needs of pre-college science and mathematics education impact of a digital national library on teacher education and practice : proceedings from a National Research Council workshop Executive Committee, Mathematical Sciences Education Board, Center for Science, Mathematics, and Engineering Education.  × 1 $19.99
Subtotal $39.98
Total $39.98
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