Allen, B. W., & Darrell, J. H. (1983). Contamination of specimen container surfaces during sputum collection.
शिकागो स्टाइल उद्धरणAllen, B W., और J H. Darrell. Contamination of Specimen Container Surfaces During Sputum Collection. 1983.
एमएलए उद्धरणAllen, B W., और J H. Darrell. Contamination of Specimen Container Surfaces During Sputum Collection. 1983.
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