Classification
AHL - Presentations, lectures, discussions
24
AMA - Education - general
4
AHK - Scientific work
3
AHN - Media and communication science
2
AHO - linguistics, literary studies
1
AMAB - Industrial training, further education
1
AYA - Sciences - general aspects
1
DPA - Electronic data processing - applications
1
MWH - Statistics
1
PKF - Elementary particles, nuclei - measuring methods and instruments
1