TY - BOOK ED - National Safety Council. TI - Supervisors' safety manual SN - 0879121971 AV - T 55 .S8156 1997 U1 - 658.3/82 21 PY - 1997/// CY - Itasca, Ill. PB - National Safety Council KW - Industrial safety KW - United States KW - Management KW - Handbooks, manuals, etc N1 - Includes bibliographical references (p. [367]-368) and index ER -