ICAO Legal Sub-committee for the preparation of a new legal instrument regarding the marking of explosives for detectability, Montreal, 9-19 January 1990 - Air and Space Law View ICAO Legal Sub-committee for the preparation of a new legal instrument regarding the marking of explosives for detectability, Montreal, 9-19 January 1990 by - Air and Space Law ICAO Legal Sub-committee for the preparation of a new legal instrument regarding the marking of explosives for detectability, Montreal, 9-19 January 1990 15 1 Air and Space Law