00283nam a2200109Ia 4500008004100000082001800041100002200059245004700081250000900128260002800137300000800165240913s9999||||xx |||||||||||||| ||und||  a515.35  VLA/L  aVladimir i arnold 0aLectures on partial differential equations  aNULL  bSpringeraNewyorkc2004  a157