Άνοιγμα κυρίου μενού

Αλλαγές

*Jonathan H. Turner, ''Herbert Spencer : a renewed appreciation'', Beverly Hills, Calif. 1985
*[http://www.iep.utm.edu/spencer/ Internet Encyclopedia of Philosophy]
*[http://human-nature.com/rmyoung/papers/spencer.html R.M.Young,The development of herbert spencer's concept of evolution]
 
 
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