TY  - BOOK
AU  - Tebay,Septimus
ED  - Asutosh Collection (National Library, India)
TI  - Elementary mensuration for the use of schools: with numerous examples 
U1  - 511.8 
PY  - 1868///
CY  - London
PB  - Macmillan
KW  - Ratio and proportion
KW  - Arithmetic
ER  -