| توضیحات: | The purpose of this book is to make it easy for you, the reader, to understand the four levels that I (Don) have developed, and to obtain practical help on how to apply any one or all of them. The book is intended as an addition to and not a replacement for the basic book, Evaluating Training Programs: The Four Levels, third edition. | تعداد بازدید: 1175 
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