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Physical Geography is a comprehensive textbook written by Arthur N. Strahler, a renowned geographer. The book provides an in-depth exploration of the physical environment, including the Earth's landforms, water bodies, atmosphere, and ecosystems. Strahler's work is considered a classic in the field of geography, and the book has been widely used by students and researchers for decades.

Arthur N. Strahler (1917-2002) was an American geographer and geomorphologist. He was a prominent figure in the field of geography, known for his work on geomorphology, glacial morphology, and geographic education. Strahler was a professor of geography at Columbia University and Harvard University, and he received numerous awards for his contributions to the field.