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by Trefil, James; Hazen, Robert M.
by Hazen, Robert M.; Jones, Adrian P.; Baross, John A.
by Hazen, Robert M.
by Hazen, Robert M.; Downs, Robert T.; Mineralogical Society of America (CON)
by James Trefil (George Mason Univ.); Robert M. Hazen (George Mason Univ.); Robert Ehrlich (George Mason Univ., Fairfax, Virginia); et al.
by Trefil, James; Hazen, Robert M.; Tammaro, Michael
by Anthony J. Gaudin (Ivy Tech Community College); James Trefil (George Mason Univ.); Robert M. Hazen (George Mason Univ.)
by James Trefil (George Mason University); Robert M. Hazen (George Mason University)
by Hazen, Robert M.; Trefil, James