Obsah
Dokonalé a spriatelené čísla, GDML_Books, (1969), p. 49-50 / Harvested from
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@inbook{403672,
     title = {Obsah},
     booktitle = {Dokonal\'e a spriatelen\'e \v c\'\i sla},
     series = {GDML\_Books},
     publisher = {Mlad\'a fronta},
     address = {Praha},
     year = {1969},
     pages = {49-50},
     language = {sk},
     url = {http://dml.mathdoc.fr/item/403672}
}

 (éd.). Obsah, dans Dokonalé a spriatelené čísla, GDML_Books,  (1969), pp. 49-50. http://gdmltest.u-ga.fr/item/403672/