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C. D. Spafford
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Student-directed investigation of natural phenomena: Using digital simulations to achieve NGSS-aligned 3D learning in middle school
M. M. Selvans, C. D. Spafford, 2016 .
Provenance, paleogeography, and paleotectonic implications of the mid-Cenozoic Sespe Formation, coastal southern California, USA
C. D. Spafford, M. Grove, R. Ingersoll, 2018 .