TY  - BOOK
AU  - Davies, P. C. W.
TI  - The forces of nature
SN  - 0-521-22523-X
PY  - 1979///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Astronomy and astrophysics thesaurus
KW  - Gravity
KW  - Relativity
ER  -