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xliii, 353 p. , Translation of : Education within industry.

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xiv, 578 p.

New York World Book Co. 1953 .
xii, 587 p.

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xiv, 442 p.

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xii, 644 p.

By Lauwerys, Joseph Albert.
Buenos Aires Angel Estrada 1971 .
xliii, 353 p. , Translation of : Education within industry.