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Start Over Subjects Cold Temperature ✖Remove constraint Subjects: Cold Temperature Titles Project no. 1 -- Cold weather operations. Report on sub-project no. 1-11 -- Influence of cold upon the efficiency of personnel ✖Remove constraint Titles: Project no. 1 -- Cold weather operations. Report on sub-project no. 1-11 -- Influence of cold upon the efficiency of personnel Languages English ✖Remove constraint Languages: English Dates by Range 1900-1949 ✖Remove constraint Dates by Range: 1900-1949

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  • Project no. 1 -- Cold weather operations. Report on sub-project no. 1-11 -- Influence of cold upon the efficiency of personnel1