@book{36025,
	author = {International Labour Office and International Labour Conference.},
	title = {The minimum requirement of professional capacity in the case of captains, navigating and engineer officers in charge of watches on board merchant ships.},
	publisher = {International labour office,},
	year = {1931.},
	address = {Geneva,},
	note = {At head of title: Second discussion. Report IV. International labour conference.}
}