00342nam a2200121Ia 4500008004100000040001600041041001200057082001800069100002100087245006900108260003200177300001100209230917s9999||||xx |||||||||||||| ||und||  e19482aMAIN  aEnglish  a301.018 D438R  aDenzin, Norman K 0aResearch act: A theoretical introduction to sociological methods  aNew YorkbMcGraw-Hillc1970  a368 p.