TY  - GEN
AU  - . 
AU  -   Hammerton, J. A
TI  - Practical knowledge for all
U1  - 032 
PY  - 0000///  n.d
CY  - London
PB  - Fleetway House
KW  -   Theory of knowledge
KW  -   Encyclopedias and dictionaries
N1  -   Volume 3,
ER  -