共 20 条
[11]
EWING T, 1959, SURVEY STUDENTS GRAD
[12]
IFFERT RE, 1957, RETENTION WITHDRAWAL, P91
[13]
KNOELL DM, 1960, RES COLLEGE STUDENTS, P44
[14]
LITTLE JK, 1959, EDUC REC, V40, P237
[15]
*NAT SCI F, 1954, DUR FORM ED HIGH AB
[16]
PERVIN LA, 1963, UNPUB EXPLORATORY ST
[17]
PETERSON CA, 1958, THESIS U PITTSBURGH
[18]
SUMMERSKILL J, 1962, AM COLLEGE, P631
[19]
*U IA OFF REG, 1959, STUD STUD PERS STAT, P4
[20]
Whittemore IC, 1953, SCHOOL SOC, V78, P25