Institute of Plumbing.

• Plumbing services design guide
• Business directory
• Business directory of plumbers
• Business directory of registered plumbers
• Data book
• Directory
• The Institute of Plumbing director 2000
• The Institute of Plumbing directory
• The Institute of Plumbing directory 1997: nearly 4000 plumbing professionals around the United Kingdom
• The Institute of Plumbing Directory 2001
• The sizing of rainwater outlets, pipes and gutters
• The sizing of sanitary pipework