00361nam a2200133 a 450000500170000002000150001708200160003210000060004811000160005424500470007026000430011730000230016049000440018320251203110347.0  a8185931313  a530.41bSUM  d_  aSumathi Rao  aField theories in condensed matter Physics  aNew DelhibHindustan Book Agencyc2001  axiv,408p.c22cm.HB  aTexts and readings in physical sciences