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An improved d.c. amplifying circuit
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GREENBERG D. M., 1939, Annual Review of Biochemistry, V8, P269, DOI 10.1146/annurev.bi.08.070139.001413
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GREENBERG DM, 1933, ARCH INTERN MED, V50, P855
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GROSS L, 1923, J PHYSL, V57, pR60
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HEVESY G., 1938, Enzymologia, V5, P138
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Energies of the soft beta-radiations of rubidium and other bodies. Method for their determination
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PHYSICAL REVIEW,
1939, 55 (03)
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[10]
The radioactive isotopes of calcium and their suitability as indicators in biological investigations
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PHYSICAL REVIEW,
1940, 57 (03)
:177-184