Prof. PhDr. Ján Michálek, DrSc. - siebzigjährig

Abstract

The fact that the 30th volume of our proceedings is being published, albeit with a delay, is not surprising, as we are also commemorating the milestone birthdays of those who were instrumental in founding the journal. This is also the case with the life anniversary of our dear colleague Prof. PhDr. Ján Michálek, Doctor of Science, who turned 70 this year.