TY  - BOOK
AU  - Quill Humphrey
TI  - John harrison, the man who found longitude. Forwor
U1  - U18xK93, K6 
PY  - 1966///
CY  - London
PB  - John Baker UK        
KW  - Geography
N1  - Bibliography: P 240-47; Appendix: P 225-39
ER  -