TY  - BOOK
ED  - Ministry of National Education (Poland)
ED  - International mathematical Olympiad
TI  - 27th International mathematical Olympiad: results and problems 
U1  - 510.079 23
PY  - 1986///
CY  - Warsaw
PB  - [Ministry of National Education (Poland)]
KW  - Mathematics
KW  - Congresses
ER  -