TY - BOOK ED - International Labour Office. ED - International labor conference TI - The minimum requirement of professional capacity in the case of captain, navigating and engineer officers in charge of watches on board merchant ships: Fourth item on the agenda AV - VK221 .I55 PY - 1929/// CY - Geneva PB - International labour office KW - Ships KW - Manning KW - Maritime law N1 - At head of title: First discussion. International labour conference. Thirteenth session, Geneva, 1929 ER -