000 00346nam a2200133 i 4500
008 991231s1999 sp g spa
020 _a8495256134
080 1 _a51
100 _aGONZALEZ DE MESA, Paz
245 0 _aMATEMATICA 2
260 _aMADRID
_b:MEC./ SAFEL EDITORES
_c,1999
997 _e2