Heiland,Robert E and Richardson,Wallace J. <br/><br/>
Work Sampling  Textual Documents 

 - 1957. 
 - New York:  McGraw-Hill Book Company,Inc,  1957. 
 - x;243p.:  02141. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Statistics, Some Examples of the Use of Work Sampling,Some Theory pf Sampling in General.
<br/><br/><label>Dewey Class. No.: </label>658.542 HEI