TY  - BOOK
AU  - Bell, Robert J. T.
TI  - An elementary treatise on co-ordinate geometry of three dimensions
PY  - 1966///
CY  - London
PB  - Macmillan
KW  - Change of Axes
KW  - Cone
KW  - Confocal Conicodes
KW  - Projections
KW  - Sphere
ER  -