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FACTORS AFFECTING OPERATION OF APPARATUS FOR COUNTING ALPHA PARTICLES IN AN ION COUNTING CHAMBER
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HARDING JE, 1958, AOAC, V41, P311
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COMPARISONS OF NATIONAL RADIUM STANDARDS
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A RADIATION BALANCE FOR THE MICROCALORIMETRIC COMPARISON OF 4 NATIONAL RADIUM STANDARDS
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USE OF CALLENDAR RADIO-BALANCE FOR THE MEASUREMENT OF THE ENERGY EMISSION FROM RADIOACTIVE SOURCES
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