TY  - BOOK
AU  - PETER PRESENCE
TI  - PURNELLS ENCYCLOPEDIA OF INVENTIONS
SN  - 361034954
U1  - R609P975E 
PY  - 1976///
CY  - PAULTON
PB  - PURNELL &SONS LTD.
KW  - PURNELLS ENCYCLOPEDIA OF INVENTIONS
ER  -