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Author notes

Editorial note: This is summary of remarks by Dr. Sam R. Hoover, Assistant to the Administrator, Agricultural Research Service, U. S. Department of Agriculture, at a Radiological Health Press Seminar, Department of Health, Education, and Welfare, Washington, D. C., December 18, 1961.

The photographs which accompany this report were obtained through the courtesy of the Agricultural Marketing Service and Office of Information, U. S. Department of Agriculture, Washington, D. C.

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