TY  - BOOK
AU  - McArthur,David
ED  - Rand Corporation
ED  - National Science Foundation (U.S.)
TI  - Skill-oriented task sequencing in an intelligent tutor for basic algebra /cDavid McArthur ... [et al.] ; prepared for the National Science Foundation
T2  - A Rand note
PY  - 1989///
CY  - California
PB  - Rand Corporation
ER  -