00320nam a2200109 a 450000500170000008200130001710000190003024500720004926000500012130000200017150000190019120251203111150.0  a025bLAN  aLancaster .F.W  aBibliometric methods in assessing productivity & impact of sesearch  aBangalorebSarada Ranganathan Endowmentc1991  a52p.c25cm.bPB  aincludes index