TY - CHAP T1 - Maintaining competence through updating T2 - Maintaining professional competence: Approaches to career enhancement, vitality, and success throughout a work life Y1 - 1990 A1 - Dubin, Samuel S JF - Maintaining professional competence: Approaches to career enhancement, vitality, and success throughout a work life PB - Jossey-Bass CY - San Fransisco ER -