"balkham, keith . "
introductory design problems: / keith.. balkham - 1 ed. - uk : heinemann 1979. - ", 79p.; 24 cm."
DT427.W38 1986
introductory design problems: / keith.. balkham - 1 ed. - uk : heinemann 1979. - ", 79p.; 24 cm."
DT427.W38 1986