TY  - BOOK
AU  - W.j. Reid and H.D. Morgan
ED  - General Secretariat P.I.A.N.C Belgium 
TI  - XXth International Navigation Congress
U1  - 387.7 1961 XXT 
PY  - 1961///
CY  - Belgium
PB  - General Secretariat P.I.A.N.C Belgium 
ER  -