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[PDF] 200 Puzzling Physics Problems: With Hints and Solutions P. Gn?dig, G. Honyek, K. F. Riley  × 1 $19.99
[PDF] 2008 Amendments to the National Academies' Guidelines for Human Embryonic Stem Cell Research Human Embryonic Stem Cell Research Advisory Committee, National Research Council, Institute of Medicine, National Academies  × 1 $19.99
Subtotal $39.98
Total $39.98