Beakley, G. C., & Leach, H. W. (1969). Careers in engineering and technology. Macmillan.
Dyfyniad Arddull ChicagoBeakley, George C., and H. W. Leach. Careers in Engineering and Technology. [New York]: Macmillan, 1969.
Dyfyniad MLABeakley, George C., and H. W. Leach. Careers in Engineering and Technology. Macmillan, 1969.
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