TY  - BOOK
AU  - Sadri, S
AU  - Jayshree, S
AU  - Ajgaonkar, M
TI  - Geometry of HR 
SN  - 8178664887
U1  - 658.3  23
PY  - 2002///
CY  - Delhi
PB  - Himalaya Publishing House 
ER  -