
https://s3-ap-southeast-2.amazonaws.com/ad-aspi/2021-09/SR%20174%20Iron%20ore%20futures.pdf?VersionId=d32.E4BCFn5myQBTU.ji3KAw6.U8BP9Q

https://ukandeu.ac.uk/wp-content/uploads/2020/06/Mind-the-values-gap.pdf

https://ustr.gov/sites/default/files/files/Press/Reports/2018%20National%20Trade%20Estimate%20Report.pdf