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Start Over You searched for: Subjects United States Remove constraint Subjects: United States Dates by Range 1900-1949 Remove constraint Dates by Range: 1900-1949 Publication Year 1900 to 1999 Remove constraint Publication Year: <span class="from" data-blrl-begin="1900">1900</span> to <span class="to" data-blrl-end="1999">1999</span>

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14. Industrial hygiene manual supplement: pictures of processes, processes, toxic agents, suggested control measures, health hazards

17. Industrial hygiene manual: industrial toxic agents, chemical formula and synonyms, principal properties, principal industrial uses, poisoning-systemic, maximum permissible concentrations of atmopheric contaminants

18. Industrial hygiene manual: industrial toxic agents, chemical formula and synonyms, principal properties, principal industrial uses, poisoning-systemic, maximum permissible concentrations of atmopheric contaminants (Manual)

19. Industrial hygiene manual: industrial toxic agents, chemical formula and synonyms, principal properties, principal industrial uses, poisoning-systemic, maximum permissible concentrations of atmopheric contaminants (Supplement)