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              Ryff, C. (1989). Happiness is everything, or is it? Explo- ration on the meaning of psychological well-being. Journal of Personality and Social Psychology, 57, 1069-1081.
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              Ryff, C. (1989). Happiness is everything, or is it? Explo- rations on the meaning of psychological well-being. Journal of Personality and Social Psychology, 57, 1069-1081.
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              Ryff, C. D. (1989). Happiness in everything, or is it? Explorations on the meaning of psychological well-being. Journal of personality and social psychology, 57, 1069-1081
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              Ryff, C. D. (1989). Happiness is everything, or is it? Explo- rations on the meaning of psychological well-being. Journal of Personality and Social Psychology, 57(6), 1069-1081. http://doi.org/10.1037/0022-3514.57.6. 1069
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              Ryff, C. D. (1989). Happiness is everything, or is it? Explorations on the meaning of psy- chological well-being. Journal of Personality and Social Psychology, 57 (6), 1069-1081.
                 (xsd:string)
              
            
 
            - 
              Ryff, C. D. (1989). Happiness is everything, or is it? Explorations on the meaning of psy- chological well-being. Journal of Personality and Social Psychology, 57(6), 1069-1081. htt ps://doi.org/10.1037/0022-3514.57.6.1069
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            - 
              Ryff, C. D. (1989). Happiness is everything, or is it? Explorations on the meaning of psy- chological well-being. Journal of Personality and Social Psychology, 57(6), 1069-1081. http s://doi.org/10.1037/0022-3514.57.6.1069
                 (xsd:string)
              
            
 
            - 
              Ryff, C. D. (1989). Happiness is everything, or is it? Explorations on the meaning of psy- chological well-being. Journal of Personality and Social Psychology, 57(6), 1069-1081. https://doi.org/10.1037/0022-3514.57.6.1069
                 (xsd:string)
              
            
 
            - 
              Ryff, C. D. (1989). Happiness is everything, or is it? Explorations on the meaning of psy- chological well-being. Journal of Personality and Social Psychology, 57, 1069−1081.
                 (xsd:string)
              
            
 
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              Ryff, C. D. (1989). Happiness is everything, or is it? Explorations on the meaning of psychological wellbeing. J. Pers. Soc. Psychol. 57, 1069-1081. doi: 10.1037/0022-3514.57.6.1069
                 (xsd:string)
              
            
 
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              Ryff, C. D. (1989): Happiness is Everything, or is it? Ex- plorations on the Meaning of Psychological Well-Being. In: Journal of Personality and Social Psychology 57, S. 1069-1081.
                 (xsd:string)
              
            
 
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              Ryff, C. D. (1989b). Happiness is everything, or is it? Explorations on the meaning of psychological well- being. Journal of Personality and Social Psychology Social Psychology, 57(6), 1069-1081. https:// doi. org/ 10. 1037// 0022-3514. 57.6. 1069
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              Ryff, C. D. (1989c). Happiness is everything, or is it? Explorations on the meaning of psychological well- being. Journal of Personality & Social Psychology, 57(6), 1069-1081. https:// doi. org/ 10. 1037// 0022- 3514. 57.6. 1069
                 (xsd:string)
              
            
 
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              Ryff, C. D. 1989. "Happiness is Everything, or Is It? Exploration on the Meaning of Psychological Well-being." Journal of Personality and Social Psychology 57: 1069-1081.
                 (xsd:string)
              
            
 
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              Ryff, Carol D. (1989): »Happiness is Everything, or Is It? Explorations on the Meaning of Psychological Well-Being«, in: Journal of Personality and Social Psychology 57, S. 1069-1081.
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