TY  - BOOK
AU  - Pamela Anderton.,
AU  - Bigg ,P H
TI  - Changing to the metric system:coversion factors definifiand
SN  - 0114800464
U1  - 389.152/PAM 
PY  - 1979///
CY  - London
PB  - Her Majesty's Stationery Office
KW  - Metric system
ER  -