Title from PDF title page (viewed on Aug. 18, 2012).
"Issued August 2011."
"GEHO0811BUFC-E-E"--P. [6].
RM-QG-06 : calibrating particulate-monitoring continuous emission monitoring systems (CEMs), especially for low concentrations of particulate matter. Published by Environment Agency in 2011. Publication and catalogue information, links to buy online and reader comments.