00581nam a2200169 a 450000500170000002000150001708200200003210000220005224500940007426000420016830000210021069000610023196400190029299700180031199900170032995200650034620251203091931.0  a9810229410  a530.15,bD, Ste  aSteeb, Willi-Hans  aProblems and solutions in Theoretical and Mathematical Physics, Vol.I: Introductory level  aLoNew DelhionbWorld Scientificc1996  aix,228p.c21 cm.  aMathematical solutions to problems, Mathematical Physics  bEngcdefg_  a86123 LIBSC C  c57955d57955  00104070aPUbPUd1998-04-09l0o530.15, D, Step86123yBK