Wilson, James T. <br/><br/>
The twelve-hour shift in the petroleum and chemical industries of the United States and Canada: a study of current experience 
Wilson, James T. 
 - Philadelphia, Pennsylvania  University of Pennsylvania, Industrial Research Unit, The Wharton School  1978 
 - iv, 58 p. 
 - Industrial research reports, miscellaneous series, no. 26 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shift systems - United States<br/>Shift systems - Canada<br/>Petroleum workers - United States<br/>Petroleum workers - Canada<br/>Chemical workers - United States<br/>Chemical workers - Canada
<br/><br/><label>Dewey Class. No.: </label>331.81973