Heller, F. A. e. (1959). New developments in training: Five studies in the efficient communication of skills. Polytechnic Management Association.
Dyfyniad Arddull ChicagoHeller, Frank A. ed. New Developments in Training: Five Studies in the Efficient Communication of Skills. [London]: Polytechnic Management Association, 1959.
Dyfyniad MLAHeller, Frank A. ed. New Developments in Training: Five Studies in the Efficient Communication of Skills. Polytechnic Management Association, 1959.
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