TY - BOOK TI - Years of challenge: the impact of demographic and work force trends on higher education in the 1990s SN - 0915164698 U1 - 378.73 PY - 1991/// CY - Washington, DC. PB - NACUBO KW - Asistencia a la universidad KW - Estados Unidos KW - EducaciĆ³n superior ER -