Stern, A. C. (1949). Best's Safety Directory (of Safety, First Aid, Hygiene and Fire Protective Products).
Chicago Style CitationStern, Arthur C. Best's Safety Directory (of Safety, First Aid, Hygiene and Fire Protective Products). 1949.
Cita MLAStern, Arthur C. Best's Safety Directory (of Safety, First Aid, Hygiene and Fire Protective Products). 1949.
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