Dangos 1 - 2 canlyniadau o 2, amser ymholiad: 0.02e Mireinio'r Canlyniadau
  1. 1
    Handbook of training evaluation and measurement methods /
    gan Phillips, Jack J.
    Cyhoeddwyd 2004
    Printed Book
  2. 2
    Handbook of training evaluation and measurement methods
    gan Phillips,Jack J
    Cyhoeddwyd 1983
    Printed Book
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