TY  - BOOK
AU  - DROOYAN,Irving
AU  - HADEL,Walter
AU  - FLEMING,Frank
TI  - Elementary algebra: structure and skills 
PY  - 1969///
CY  - New York
PB  - John Wiley and Sons
UR  - http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=12483
ER  -