00246nam a22000977a 4500020000800000082001500008100002000023245004200043260005100085654001200136  a...  a616.6bCAS  aCastro, E Perez  aTreatment of Litiasis - Renal Surgery  aKarl Storz, GermanybKarl Storz, Germanyc1999  aUrology