00922cam a22002531 4500 l 31000087 DLC 20260227111533.0 790711s1931 sz i100 0 eng c l 31000087 (OCoLC)5160083 U.S. Dept. of labor. Libr. OCl OCoLC DLC premarc VK221 .I55 1931 656 International Labour Office The minimum requirement of professional capacity in the case of captains, navigating and engineer officers in charge of watches on board merchant ships. Fourth item on the agenda. Geneva, International labour office, 1931. 106 p., 1 l. 22 cm. At head of title: Second discussion. Report IV. International labour conference. Ships Manning. Maritime law. International Labour Conference. 36025 36025