TY - BOOK T1 - Undergraduate completion and persistence at four-year colleges and universities :detailed findings / DA - c1990. CY - Washington, DC (Suite 750, 122 C St., NW, Washington 20001-2190) : AU - Porter, Oscar F. CN - LC148.2 CN - LC148.2 PB - National Institute of Independent Colleges and Universities, PP - Washington, DC (Suite 750, 122 C St., NW, Washington 20001-2190) : PY - c1990. ID - 147694 KW - College attendance KW - College attendance KW - College dropouts KW - College dropouts KW - College graduates KW - College graduates TI - Undergraduate completion and persistence at four-year colleges and universities :detailed findings / ER -