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111. The occurrence of ice in plant tissues. Planl World, 9: 2 i 5 



1906. (Contains a very full bibliography of this subject . I 



112. Wieler, A. Untersuchungen fiber die Einwirkung schwefliger Saure auf die 



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113. Wilcox, E. Mead. A rhizomorphic root rot of fruit trees Pkla \- i 



Bui. 49: 1-32, pis. 1-11,1901. 



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149 



