Author: Ryan, M.P., & Blevins, J.Y.K., 1987.:
Title: The viscosity of synthetic and natural silicate melts and glasses at high temperatures and 1 Bar pressure and at higher pressures. An extended compilation of viscosity data in tabular and graphic form. [U.S. Geol. Surv. Bull.., 1764.]
Description: Washington. 4to, 27.5cm. Pp. viii,563, 13 figs. amd photos, numerous tables and full-page graphics throughout, bibl. Orig. wrs. Excellent copy, as new.

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