TY - BOOK AU - Humphrey,Brad AU - Stokes,Jeff TI - The 21st century supervisor: nine essential skills for frontline leaders SN - 0787946842 AV - HF5549.12 .H864 2000 U1 - 658.3/02 21 PY - 2000/// CY - San Francisco, Calif. PB - Jossey-Bass/Pfeiffer KW - Supervision of employees KW - Supervisors N1 - Includes bibliographical references ER -