TY  - BOOK
AU  - Spencer,Nye S.
AU  - Kucera G.F.
TI  - Handbook of magnetic compass adjustment and compensation
U1  - 621.384191 23
PY  - 1963///
CY  - Washington
PB  - US goverment printing office
KW  - Compass
KW  - Handbook
KW  - Magnetic
KW  - Magnetic compass
ER  -