00429nam a22001577a 450000500170000002000220001704100080003908200230004710000230007024500500009326000290014330000180017249000390019065000210022985600210025020260806141057.0  a978-3-540-04912-8  aeng  223rd.a512.42bJAT  aJategaonkar, A. V.  aLeft principal ideal ringscA. V. Jategaonkar  aNew YorkbSpringerc1970  a145p.;c23cm.  aLecture notes in mathematics ; 123  aIdeals (Algebra)  uwww.springer.com