Expert Panel on Air Quality Standards : second report on 1,3-butadiene.
Expert Panel on Air Quality standards.
Great Britain.Department for Environment, Food & Rural Affairs.
Scotland.Scottish Executive.
Wales.National Assembly.
Northern Ireland.Department of the Environment.
[London : Department for Environment, Food and Rural Affairs,  Scottish Executive, National Assembly for Wales, Department of the Environment in Northern Ireland],
2001.
"Draft for comment".
Cover title.
Includes bibliographical references.