Browsing Special Collections by Author "Haarhoff, P.C."

Browsing Special Collections by Author "Haarhoff, P.C."

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  • Wetmatigheid en meganiese ingenieurswese 
    Haarhoff, P.C.; University of Pretoria. Dept. of Mechanical Engineering (University of Pretoria, 1983-10-27)
    The first technological revolution, in the fourth millennium BC, was followed by immense social progress. The second revolution, which is now taking place, could lead to an even greater development in the human sciences, ...