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005 19980601
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100   $a19980601d1967----km-y0itay50------ba
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200 1 $aTrends in Corporate Bond Quality$fThomas R. Atkinson ; with the Assistence of Elizabeth T. Simpson.
210   $aNew York$cNational Bureau of Economic Research$d1967
215   $aXVI,, 106 p.$d24 cm
225 1 $a"National Bureau of economic Research. Studies in Corporate Bond Financing Number"$v6
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700  1$aAtkinson,$bThomas R.$0233169
702  1$aSimpson,$bElizabeth T.
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