TY  - BOOK
AU  - BETTIE , Joe . L ...[et al.] .
TI  - Elementary Mathematics for Liberia: Pupil's Book Three
SN  - 201134233
U1  - 510 
PY  - 1978///
CY  - Liberia
PB  - The Ministry of Education
KW  - Mathematics
KW  - Mathematics--Study and teaching (Elementary)
ER  -