Preface

W. D. Keller and A. F. Frederickson
Clay Minerals Committee, National Academy of Sciences—National Research Council.

Clays and Clay Minerals; 1957 v. 6; no. 1; p. ix; DOI: 10.1346/CCMN.1957.0060101
© 1957, The Clay Minerals Society
Clay Minerals Society (www.clays.org)