TY  - BOOK
AU  - Ashtekar,Abhy
AU  - Stachel,John
TI  - Conceptual problems of quantum gravity
SN  - 9780817634438
U1  - 530.142 C744 
PY  - 1991///
CY  - Boston
PB  - Birkhauser
KW  - Quantum gravity
KW  - Quantum universe
ER  -