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101 0 $aeng
200 1 $aConceptual Problems of Quantum Gravity$eBased on the Proceedings of the 1988 Osgood Hill Conference, North Andover, Massachusetts, 15-19 May 1988$fEdited by Abhay Ashtekar and John Stachel
210   $aBoston [etc.]$cBirkhauser$d1991
225 1 $aEinstein Studies$v2
300   $aSponsored by the Boston University Center for Einstein Studies
610 0 $aRelatività
610 0 $aGravità
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702  1$aStachel,$bJohn
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996   $aConceptual problems of quantum gravity$9186638
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