TY  - BOOK
AU  - DAN MASSEY,L (ED), MUTTER,SHARON A (ED), PSOTKA,JOSEPH (ED)
TI  - INTELLIGENT TUTORING SYSTEMS: LESSONS LEARNED
SN  - KBCS
U1  - 1020 
PY  - 1988///
CY  - NEW JERSEY
PB  - LE
N1  - SC-37
ER  -