TY  - BOOK
AU  - Covey,Stephen R.
TI  - The seven habits of highly effective people: restoring the character ethic 
SN  - 0671663984
AV  - BF637.S8 C68 1989
PY  - 1989///
CY  - New York
PB  - Simon and Schuster
KW  - Sucesos
KW  - Aspectos psicologicos
KW  - Carácter
ER  -