00361nam a2200121Ia 450000500170000000800410001702000220005805000180008010000230009824500690012126000240019065000250021420251229085553.0251229s9999    xx            000 0 und d  a978-0-7619-4975-6  a GN 345 .A54   aAngrosino, Michael 0aDoing ethnographic and observational researchcMichael Angrosino  aLondonb SAGEc2007  aEthnology - Research