490 
Journal of Agricultural Research 
Vol. XXV, No. I* 
LITERATURE CITED 
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1913. sull’ “incappucciamento” DEL trifoglio. In Bui. Soc. Bot. Ital., 
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(7) Voglino, Pietro. 
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, (8) Winslow, C-E. A., Kligler, I. J., and Rothberg, William. 
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(9) -others. 
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(10) Wolf, Frederick A. 
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(11) -ana Foster, A. C. 
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