TY - BOOK ED - United States Employment Service TI - Job descriptions for industrial service and maintenance jobs AV - TT23 .A5 1939 U1 - 658.2069 PY - 1939/// CY - Washington PB - U.S. Govt. print. off. KW - Industrial arts KW - Occupations N1 - "Glossary": p. 245-250; Bibliography: p. xxi ER -