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BENNE E. J., 1942, Journal of the Association of Official Agricultural Chemists, V25, P573
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FRAPS G. S., 1940, INDUST AND ENGINEER CHEM ANALYT ED, V12, P16, DOI 10.1021/ac50141a005
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Evaluation of the vitamin a potency of feeds
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GUILBERT H. R., 1934, Industrial and Engineering Chemistry. Analytical edition, V6, P452, DOI 10.1021/ac50092a029
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HARTMAN AM, 1934, J BIOL CHEM, V105, P36
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Kernohan G, 1939, Science, V90, P623, DOI 10.1126/science.90.2348.623
[7]
Moore L. A., 1942, INDUST AND ENGINEER CHEM ANALYT ED, V14, P707, DOI 10.1021/i560109a006
[8]
MOORE L. A., 1940, INDUST AND ENGINEER CHEM ANALYT ED, V12, P726, DOI 10.1021/ac50152a008
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PETERSON W. J., 1937, Industrial and Engineering Chemistry. Analytical edition, V9, P71, DOI 10.1021/ac50106a007
[10]
Recent developments in methods for determining carotene
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1941, 13
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