00362nam a2200157Ia 450000500170000000800410001702000180005804100080007608200090008410000170009324500180011026400370012830000190016565000060018465500140019020260914083057.0260914s9999    xx            000 0 und d  a1-56847-017-7  aeng  a621.1 aDUNN, Andrew10aSimple Slopes  aNew YorkbThomson Learningc1993  a32 hlm.c26 cm 4a0  aGrade 7-9