Proctor, N. H. (1988). Chemical hazards of the work place: : 2nd ed (2nd ed.). J. B. Lippincott.
शिकागो स्टाइल उद्धरणProctor, Nick H. Chemical Hazards of the Work Place: : 2nd Ed. 2nd ed. Philadelphia: J. B. Lippincott, 1988.
एमएलए उद्धरणProctor, Nick H. Chemical Hazards of the Work Place: : 2nd Ed. 2nd ed. J. B. Lippincott, 1988.
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