arnes, Ralph M. <br/><br/>
Work sampling/ 
Ralph M. Barnes 
 - 2nd ed. 
 - New York:  John Wiley,  c1957 
 - x, 283 p.:  ill.;  23 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 273-278 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Work sampling<br/>Time study<br/>Work measurement
<br/><br/><label>Dewey Class. No.: </label>658.562