TY  - BOOK
AU  - Lavery, H. I. 
TI  - Shipboard operations / 
SN  - 0434910910
U1  - 387.5442 23
PY  - 1990///.
CY  - London : 
PB  - Heinemann Newnes, 
KW  - Merchant marine--Safety measures.
ER  -