TY  - BOOK
AU  - Nand,Brahma
AU  - Tyagi,B.S.
AU  - Sharma,Bhu Dev
TI  - co-ordinate solid geometry: co-ordinate geometry of three dimensions 
U1  - 516.16 22
CY  - New Delhi
PB  - Kedar Nath ram nath
KW  - solid geometry
ER  -