@article{684773,
      note = {Prepared on behalf of the Working Group on the Particle  Measurement Programme (PMP).},
      url = {http://digitallibrary.un.org/record/684773},
      title = {Particle Measurement Programme : heavy duty  inter-laboratory correlation exercise : final report /},
      publisher = {UN,},
      recid = {684773},
      pages = {136 p. :},
      address = {Geneva :. 2010-06-04},
      year = {2010},
      month = {Jun},
}