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- Author(s):
- Leffmann, Henry, 1847-1930
- Publication:
- Philadelphia : P. Blakiston, 1888
- Subject(s):
- Chemical Phenomena
- Author(s):
- Leffmann, Henry, 1847-1930
- Publication:
- Philadelphia : P. Blakiston, 1894
- Subject(s):
- Chemical Phenomena
- Author(s):
- Leffmann, Henry, 1847-1930
- Publication:
- Philadelphia : P. Blakiston, Son & Co., 1891
- Subject(s):
- Chemical Phenomena
- Author(s):
- Leffmann, Henry, 1847-1930
- Publication:
- [Philadelphia] : [Lea Brothers & Company], 1895
- Subject(s):
- Milk -- microbiology
Food Inspection
Food Contamination -- prevention & control
United States