00317nam a2200121 a 450000500170000008200220001710000200003924500200005926000310007930000240011049000400013470000210017420251203090945.0  a515.352,bDD, Mag  aMagnus, Wilhelm  aHill's equation  aNew YorkbDover Pub.c1979  aviii, 129p., 22 cm.  aDover books on advanced mathematics  aWinkler, Stanley