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			No cover image available Geology and earth sciences sourcebook for elementary and secondary schools. Robert L. Heller, editor. Prepared under the guidance of the American Geological Institute, National Academy of Sciences-National Research Council. by American Geological Institute \| Heller, Robert L [ed.] \| National Academy of Sciences (U.S.) \| University of Minnesota, Duluth. Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: New York : Holt, Rinehart and Winston, 1962Availability: Items available for loan: Mysore University Main Library (1) Call number: 550.7 HEL. Place hold Log in to add tags Add to cart (remove)
			No cover image available Geology and earth sciences source book for elementary and secondary schools / Robert L. Heller, editor. Prepared under the guidance of the American Geological Institute, National Academy of Sciences-National Research Council. by American Geological Institute \| Heller, Robert L [ed.] \| National Academy of Sciences (U.S.) \| University of Minnesota, Duluth. Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: New York : Holt, Rinehart and Winston, 1962Availability: Items available for loan: Mysore University Main Library (1) Call number: 550.7 HEL. Place hold Log in to add tags Add to cart (remove)

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