00317nam a2200121Ia 4500008004100000020001500041082001900056100002300075245002000098260004900118300000800167650002000175140316s9999    xx            000 0 und d  a8131300366  a025.04bPUR/DI  aTiwari,Purushotham  aDigital Library  aNew DelhibA H PPublishing Corporationc2006  a285  aLIBRARY SCIENCE