Geology: Atlas and Glossary of Primary Sedimentary Structures . F. J. Pettijohn and Paul Edwin Potter. Translations into Spanish, French, and German by Jaun Carlos Riggi, Marie-Hélène Sachet, and Hans-Ulrich Schmincke. Springer-Verlag, New York, 1964. xvi + 370 pp. Illus. $14.75.