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<item>
  <id>00703469</id>
  <dt>b</dt>
  <an>00703469</an>
  <augroup>
    <au>Igoshin, V.I.</au>
  </augroup>
  <ti>Mathematical logic and the theory of algorithms. (Matematicheskaya logika i teoriya algoritmov.)</ti>
  <so>Saratov: Izdatel'stvo Saratovskogo Universiteta. 257 p. (1991).</so>
  <py>1991</py>
  <pu>Saratov: Izdatel'stvo Saratovskogo Universiteta</pu>
  <lagroup>
    <la>RU</la>
  </lagroup>
  <ccgroup>
  </ccgroup>
  <utgroup>
  </utgroup>
  <cigroup>
  </cigroup>
  <ligroup>
  </ligroup>
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