The Environmental accounts on material flows QMI was superseded on 4 September 2019.

Lawrlwytho'r fethodoleg hon

Manylion cyswllt ar gyfer y Gwybodaeth am ansawdd a methodoleg

David Ainslie or Hazel Clarke
environment.accounts@ons.gov.uk
Ffôn: +44 (0)1633 455847