• Dewatering Sewage Sludge by Centrifuge

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0183
• Provisional Environmental Quality Standards for Endosulfan in Water DoE 2527-M

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0120
• Proposed Provisional Environmental Quality Standards for Fenitrothion in Water (DWE9378) DoE 2197-M

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0117
• Proposed Provisional Environmental Quality Standards for Malathion in Water (ESSL9378) DoE 2110-M/1

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0121
• Diatoms as Water Quality Indicators in British Rivers

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0178
• Proposed Provisional Environmental Quality Standards for Trifluralin in Water (ESSL9378) DoE 2231-M/1

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0118
• Investigation of In-Situ Bacterial Denitrification in the Confined Chalk Aquifer in Norfolk and North London WD/90/4

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0144
• Approved Material Testing Procedures (DWE 9534), Progress Report to the Department of the Environment – July to December 1990

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0726
• Proposed Provisional Environmental Quality Standards for Dichlorvos in Water (ESSL9378) DoE 2249-M

  Document

  • Published GMT 1 January 1990
  • Ref: DWI0119
• Cryptosporidium and Water Courses PRS 2292-M
  • Published GMT 12 January 1989
  • Ref: DWI0270
• Provisional Environmental Quality Standards for Azinphos-Methyl in Water DoE 2348-M

  Document

  • Published GMT 1 January 1989
  • Ref: DWI0116
• Provision of Basic Utilities in Rural England

  Document

  • Published GMT 1 January 1989
  • Ref: DWI0632