00972nam0-22003011i-450-99000613957040332119980601000613957FED01000613957(Aleph)000613957FED0100061395719980601d1967----km-y0itay50------ba--------00-yyTrends in Corporate Bond QualityThomas R. Atkinson ; with the Assistence of Elizabeth T. Simpson.New YorkNational Bureau of Economic Research1967XVI,, 106 p.24 cm"National Bureau of economic Research. Studies in Corporate Bond Financing Number"6332.6323Atkinson,Thomas R.233169Simpson,Elizabeth T.ITUNINARICAUNIMARCBK990006139570403321XV C 71 (6)82582FGBCFGBCTrends in Corporate Bond Quality642829UNINAGIU01