TY - BOOK AU - Ashtekar, Abhay, ed. AU - Stachel, John, ed. ED - Osgood Hill Conference 1988 TI - Conceptual problems of quantum gravity: proceedings of the 1988 Osgood Hill Conference, North Andover, Massachusetts, 15-19 May 1988 T2 - Einstein studies; v. 2 SN - 0-8176-3443-6 PY - 1991/// CY - Boston PB - Birkhauser KW - Astronomy and astrophysics thesaurus KW - Quantum gravity KW - Quantum theory ER -