TY  - BOOK
AU  - Sharma, A. K.
TI  - Textbook of 3D Coordinate Systems Straight Lines 
SN  - 8171419763
U1  - 516.16 
PY  - 2005///
CY  - New Delhi : 
PB  - Discovery Publishing House, 
KW  - Coordinates
KW  - Geometry Analytic
N1  - NN
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/81-7141-976-3.pdf
ER  -