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  • × year_i:[1960 TO 1970}
  1. Bertalanffy, L. von: General systems theory : a critical review (1962) 9.91 
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    Author
    Bertalanffy, L. von
  2. Bertalanffy, L. von: General system theory : foundations, development, applications (1969) 9.91 
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    Bertalanffy, L. von

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