00311nam a2200121 a 450000500170000002000180001708200150003510000140005024500350006426000450009930000260014450000190017020251203112230.0  a9780387988504  a512.4bLAM  aLam, T.Y.  aExercises in modules and rings  aUnited States of AmericabSpringerc2007  axviii,412p.c2cm.bHB  aincludes index