Question: hvornår trådte konventionen om ballastvandforvaltning i kraft?
Answer: 2017-09-08; 09-08-2017; 2017-09-08; 08 september 2017; 09 08 2017; 08/09/2017; 08 09 2017; 2017 september, 08; 2017 09 08; 08-09-2017; 09/08/2017; 2017 september 08