Motivation :

Beck, Robert C. (Robert Clarence).

Motivation : theories and principles / Robert C. Beck. - 3rd ed. - Englewood Cliffs, New Jersey : Prentice Hall, c1990. - xii, 414 p. : ill. ; 24 cm.

Includes bibliographical references and index.

0136030777


Motivation (Psychology).

BF503 / .B43 1990

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