Mineralogy and petrology of some paleozoic clays from central Pennsylvania / Минералогия и петрология некоторых палеозойских глин из центральной Пенсильвании

Throughout the evolution of this thesis the writer was ably counseled by Dr. Thomas E. Bates who gave much time and thought .to the study. Many aspects of this work were discussed with Dr. P. D. Krynine and Dr. J. C. Griffiths. The writer is particularly indebted to them for many discussions on the methodology of inference and scientific thinking. Many valuable suggestions and explanations were given by Dr. W. Bradley of the Illinois Geological Survey.
Miss Ethel Senkovits took the electron micrographs/ The work was supported by a grant from the Geophysics Branch of the Office of Naval Research and is part of an investigation of the morphology, structure, and origin of fine-grained minerals. <...>