(1960). MCGRAW-HILL ENCYCLOPEDIA OF SCIENCE AND TECHNOLOGY. : MCGRAW-HILL BOOK CO.
1960. MCGRAW-HILL ENCYCLOPEDIA OF SCIENCE AND TECHNOLOGY. : MCGRAW-HILL BOOK CO.
MCGRAW-HILL ENCYCLOPEDIA OF SCIENCE AND TECHNOLOGY. : MCGRAW-HILL BOOK CO. 1960.
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