00287nam a2200109 a 450000500170000002000150001708200130003210000150004524500440006026000480010430000250015220251203110608.0  a8181280474  a512bCOH  aCohn, P.M.  aBasic AlgebrabGroups, Rings and Fields  aNew DelhibSpringer (India) Pvt. Ltd.c2003  axii,465p.c24 cm. PB