00340nam a2200121Ia 4500008004100000040001200041082001400053100003700067245004700104250001100151260004300162300001300205200103s9999||||xx |||||||||||||| ||und||  aIMU-MPC  aColumn-56  aHydrographer of the navy, London 0aAdmiralty Manual of Hydrographic Surveying  aVol. 1  bHydrographer of the navy, Londonc1965  axiv, 671