Heiland, Robert E. <br/><br/>
Work sampling 
by Robert E. Heiland and Wallace J. Richardson 
 - New York  McGraw-Hill  1957 
 - 243p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Time and Motion Study
<br/><br/><label>Dewey Class. No.: </label>T83 H363