Secretary of State's guidance : lead glass, glass frit and enamel frit manufacturing processes /
Great Britain.Department of the Environment.
Great Britain.Scottish Office.
Great Britain.Welsh Office.
Great Britain.Environmental Protection Act 1990.
London : HMSO,
1995.
At head of title: Environmental Protection Act 1990, Part, 1.
Caption title.
"PG3/4(95)"
Air