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040   $aDip.to Matematica$beng
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084   $aAMS 49-XX
084   $aAMS 58A15
084   $aQA316.G84
100 1 $aGriffith, Phillip A.$055674
245 10$aExterior differential systems and the calculus of variations /$cPhillip A. Griffiths
260   $aBoston :$bBirkhauser,$c1983
300   $aviii, 335 p. :$bill. ;$c24 cm
490 0 $aProgress in mathematics [Birkhauser],$xISSN 0743-1643;$v25
500   $aBibliography: p. 332-335
500   $aIncludes index
650  4$aCalculus of variations
650  4$aExterior differential systems
907   $a.b10770732$b23-02-17$c28-06-02
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996   $aExterior differential systems and the calculus of variations$9922533
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