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

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

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