LEADER 00689nam2 22002171i 450 001 990002274430403321 035 $a000227443 035 $aFED01000227443 035 $a(Aleph)000227443FED01 035 $a000227443 100 $a20030801d--------km-y0itay50------ba 200 1 $a<>pi-electron properties of purine calculated by the L.C.A.O. method. London, 1970, p. 72-73. 463 0$1001000221616 701 1$aMason,$bS.F.$0346830 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990002274430403321 959 $aFFABC 996 $aPi-electron properties of purine calculated by the L.C.A.O. method. London, 1970, p. 72-73$9385187 997 $aUNINA DB $aING01