000  $anz n  2
000  $a주제어
001  $aKSH1998042361
005  $a20021231000000
008  $a980513 n azknnaabn          |a a|a    | 
150  $a연결 행렬[連結行列]
450  $wr$i영어$aconnectivity matrix
550  $wg$a행렬(수학)[行列]