Classification
AHL - Presentations, lectures, discussions
30
AHK - Scientific work
2
AHH - Universities - research
1
AHN - Media and communication science
1
AHO - linguistics, literary studies
1
DNC - Internet
1
HDG - Psychology, psychiatry
1
YPB - Economy - general aspects
1
YPF - Labour science
1
YPH - Secretarial work, office management
1
YPI - Corporate governance
1
ZFA - Teaching materials, learning aids
1