TY - BOOK AU - Covey,Stephen R. TI - Principle-centered leadership SN - 0671749102 AV - BF637.S8 C67 1991 U1 - 158/.4 20 PY - 1991/// CY - London PB - Summit Books KW - Leadership KW - Success in business KW - Success KW - Psychological aspects N1 - Includes index ER -