New possible source of vitamin D
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J.S.H.
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Article
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1933
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Elsevier Science
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English
โ 100 KB
mist of sulphuric acid and prevents its escape. After digestion has been completed, the tube may be washed with water to recover any traces of ammonium salts which have been carried into it with the spray. The inventors describe the device as simple, cleanly, convenient, inexpensive, and efficient.