00281nam a2200109Ia 4500008004100000041000800041082001100049100001900060245003300079260004000112999001900152231107s1994    xx            000 0 und d  aeng  a690.21  aS, Ramamurtham  aTheory of structure 4th Edn.  aNew DelhibDhanpat Rai & Sonsc1994  c921980d921980