@article{123420,
      note = {Includes bibliographical references.},
      url = {http://digitallibrary.un.org/record/123420},
      title = {The study design : research design with conceptual scheme  and core questionnaires.},
      publisher = {UN,},
      recid = {123420},
      pages = {34 p. :},
      address = {[Bangkok] :. 1985-11-25},
      year = {1985},
      month = {Nov},
}