Paul Schwarzkopf. (1947). Powder metallurgy: Its physics and production. New York: MacMillan.
शिकागो स्टाइल उद्धरणPaul Schwarzkopf. Powder Metallurgy: Its Physics and Production. New York: MacMillan, 1947.
एमएलए उद्धरणPaul Schwarzkopf. Powder Metallurgy: Its Physics and Production. New York: MacMillan, 1947.
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