Tenth Antarctic Treaty Consultative Meeting (Washington) Background paper 1 "Review of implementation of Article IX.4 of the Treaty" (ANT/X/BP/1). Includes related documents containing corrections and addendums (ANT/X/BP/1, ANT/X/BP/1/Corr.1, ANT/X/BP/1/Corr.2, ANT/X/BP/1/Corr.2/Add.1, and ANT/X/BP/1/Corr.2/Add.1/Corr.3)