LEADER 00680nam0-22002771i-450- 001 990000562920403321 005 20001010 035 $a000056292 035 $aFED01000056292 035 $a(Aleph)000056292FED01 035 $a000056292 100 $a20001010d--------km-y0itay50------ba 101 0 $aita 105 $ay-------001yy 200 1 $aBoundary value problems$fDavid L. Powers 205 $a4.ed. 210 $aSan Diego$cHAP$d1999 215 $a24 cm$d528 p. 700 1$aPowers,$bDavid L. 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990000562920403321 952 $a05 76 2$b2083$fDININ 959 $aDININ 997 $aUNINA DB $aING01