00251nam a2200097Ia 4500080001800000100001500018245005200033260003800085300001100123583001900134  a18.04.01 P716  aPlatek, R.  aDevelopment and design of survey questionnaires  bStatistics CanadaaOttawaCAc1985  a119 p.  c3/7/00kM2LMGR