000  $anz n  2
000  $a주제어
001  $aKSH2000033285
005  $a20000819064607
008  $a000819 n azknnaabn          |a a|a    | 
150  $a변분 원리[變分原理]
450  $wr$i영어$avariation principle
550  $a변분법[變分法]