TY  - BOOK
AU  - Groom,Arthur
AU  - Groon,Susan
TI  - How we weigh and measure
U1  - 389.1 
PY  - 1960///
CY  - London
PB  - Routledge and Kegan Paul
KW  - Weights and measures
KW  - Juvenile literature
N1  - Bibliography : p. 159
ER  -