00362nam a2200121 a 450000500170000000800410001705000240005810000150008224500780009726000360017530000080021144000210021920140412111245.0070806s19uu    xx            00    eng d  aTR(GS 507bSco 1989  aRobert Guy  aDiscover Science 1 :Workbook :bTeacher's anotated edition /cRobert Guy.  aU.S.A :bScott Foresman,c1989.  a252  aDiscover Science