LEADER 00430oas  2200169z- 450 
001 996462244003316
011   $a2663-8134
035   $a(CKB)4100000012793502
035   $a(EXLCZ)994100000012793502
100   $a20230704cuuuuuuuu  -u-            -
101 0 $aeng
200 00$aEspiral
210   $cUniversidad Nacional Mayor de San Marcos$aPeru
906   $aJOURNAL
912   $a996462244003316
996   $aEspiral$91843570
997   $aUNISA