00309nam a2200121Ia 4500008004100000040001200041082001400053100003300067245002700100250001300127260003900140300000800179200103s9999||||xx |||||||||||||| ||und||  aIMU-MPC  aColumn-44  aThe Hydrographer of the Navy 4aThe Mariner's Handbook  a4th Ed.   bThe Hydrographer of the Navyc1973  a139