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Subjects
- Boston7
- Odorants2
- Refuse Disposal -- legislation & jurisprudence2
- Air Pollution -- adverse effects1
- Air Pollution -- legislation & jurisprudence1
- Death Certificates -- legislation & jurisprudence1
- Diphtheria -- mortality1
- Horns1
- Manure1
- Occupations -- legislation & jurisprudence1
- Sanitation -- legislation & jurisprudence1
- Ships1
- Skin1
- Surveys and Questionnaires1