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  1. An Introduction to Geology – Free Textbook for College-Level ...

  2. Introduction to Geology - MIT OpenCourseWare

  3. Laboratory Manual for Introductory Geology - Open Textbook …

  4. An introduction to geology | OpenLearn - Open University

  5. Lecture Notes and Slides | Introduction to Geology | Earth, …

  6. Lecture Notes | Introduction to Geology - MIT OpenCourseWare

  7. An Introduction to Geology (Johnson, Affolter, Inkenbrandt, and Mosher)

  8. "Laboratory Manual for Introductory Geology" by Bradley …

  9. An Introduction to Geology – Simple Book Publishing

  10. Physical Geology - Open Textbook Library