The health of seafarers. 1. Historical background and present situation.
D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D007390:International Agencies; D009326:Naval Medicine / Q000266:history; D014944:World Health Organization