Professional Paper, Issues 56-57 (Paperback) (ISBN-13: 9781274406231)

This volume comprises issues 56 and 57 of the "Professional Paper" series from the U.S. Geological Survey. These papers present detailed research and findings in various areas of earth science. Covering a range of topics such as geology, paleontology, and hydrology, this collection offers valuable insights and data for researchers, students, and professionals in the field. The "Professional Paper" series is known for its rigorous scientific standards and contributions to the understanding of the Earth's processes and resources.

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