00429nam a2200145Ia 4500020001500000082001800015100002200033245008700055250000800142260003900150300002800189500005600217500000500273700000500278  a981270809X  a513bSt813.CS  aSteeb, Willi-Hans  aContinuous symmetries, lie algebras, differential equations and computer algebrab  a2nd  aNew JerseybWorld Scientificc2007  axiv, 457p. Bibl. Index.  a"Purchased under NBHM grant for the year 2007-2008"  a  a