SUBMARINES AND STEEL HELMETS: GENERAL PRACTICE IN THE NAVY AND ARMY.
D005194:Family Practice; D058006:General Practice; D006260:Head Protective Devices; D006801:Humans; D008887:Military Medicine; D009326:Naval Medicine; D012767:Ships; D013232:Steel; D013366:Submarine Medicine; D014481:United States
D013232:Steel
GENERAL PRACTICE; MILITARY MEDICINE; NAVAL MEDICINE; SUBMARINE MEDICINE; UNITED STATES