TY  - BOOK
ED  - Papua New Guinea. Department of Education.
TI  - Secondary school mathematics 9A: teachers' guide 
SN  - 9980581476
PY  - 1987///
CY  - Port Moresby
PB  - Department of Education
KW  - Mathematics
KW  - Study and teaching (Secondary )
KW  - Papua New Guinea
ER  -