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181  1$6z01$ai $bxxxe  
182  1$6z01$an
200 1 $aModern operational mathematics in engineering$fby Ruel V. Churchill
210   $aNew York$aLondon$cMcGraw-Hill book company$d1944
215   $aX, 306 p.$d24 cm
700  1$aChurchill$b, Ruel V.$3MILV042273$4070$0447
790  1$aChurchill$b, Ruel Vance$3IEIV106687$zChurchill, Ruel V.
801  3$aIT$bIT-01$c20160126
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996   $aModern operational mathematics in engineering$93613492
997   $aUNICAS