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OCR Page 1 of 2April 13th,1929.
U. S. Govornment Printing Offico,
Washington,
3.C.
Gentlemen:
Ne are enclosing 254 in stamps for which we wish
you would send us fivo insues of circular of the Bureau of
Standards No. 374, entitled "X-ray and Radium Protection".
Very truly yours,
Vice President.
HHBarker: RH
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