Mar. io, 1923 
Growth-Promoting Substance by Azotobacter 
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LITERATURE CITED 
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1912. THE PREPARATION PROM YEAST AND CERTAIN FOODSTUFFS OP THE SUB¬ 
STANCE, THE DEFICIENCY OP WHICH IN DIET OCCASIONS POLYNEURITIS 
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(5) Pacini, August J. P., and Russell, Dorothy Wright. 
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(6) Nelson, V. E., Fulmer, Ellis I., and Cessna, Ruth. 
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