TY  - BOOK
AU  - Poulden,L.A.
TI  - The duodecimal book with tables: for the use of surveyors architects, builders & students 
U1  - 510.83 
PY  - 1959///
CY  - London
PB  - Cleaver-Home Press
KW  - Mathematics
KW  - Logarithms
KW  - Duodecimal system
KW  - Tables
ER  -