00398nam a2200133Ia 45000010005000000080041000050820014000461000031000602450060000912600033001513000011001846500025001956500044002204755190219s1982    sp     gr     000 0 spa d0 a516bG8731 aGutierrez Ducons Juan Luis10aGeometria y trigonometria /cGutierrez Ducons Juan Luis  aBarcelona :bCultural,c1982  a279 p.14aGEOMETRIA Y TRIGONOM24aGEOMETRIA,TRIGONOMETRIA,GEOMETRIA PLANA