28 MASS. EXPERIMENT STATION Bl'LLETlN 287 



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Pub. Health 22: 601-611. 



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lished by the author at Madison, Wis. 



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first Ann. Conv. Internatl. Assoc. Ice Cream Mfrs. 2, 24-29. 



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 1 1 : 564-570. 



Publication of this Document Approved by Commission on Administration and Finance 

 4M-8-32 No. 0152 



