TY  - BOOK
AU  - Levi-Civita, Tullio
AU  - John Dougall, tr.
TI  - A simplified presentation of einstein's unified field equations
CY  - London
PB  - Blackie
KW  - Astronomy and Astrophysics Thesaurus
KW  - Differential Equations
KW  - Unified Field Equations
ER  -