Classification
500 - Natural sciences & mathematics
791 - Public performances
384 - Communications; telecommunication
1
414 - Phonology & phonetics
1
530 - Physics
1
700 - The arts; fine & decorative arts
1
770 - Photography, photographs & computer art
1
777 - [Unassigned]
1
778 - Fields & kinds of photography
1
900 - History & geography
1