00296nam a2200121 a 450000500170000002000180001708200130003510000230004824500210007126000390009230000240013150000190015520251203111554.0  a9780486656564  a515bLAN  aLanczos, Cornelius  aApplied analysis  aNew YorkbDover Publicationsc1988  axi,539,pc22cm.bPB  aincludes index