"balkham, keith . "
introductory design problems: / keith.. balkham - 1 ed. - uk : heinemann 1979. - ", 79p.; 24 cm."
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745. 2 bal
introductory design problems: / keith.. balkham - 1 ed. - uk : heinemann 1979. - ", 79p.; 24 cm."
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745. 2 bal