Topic
G1-922
72
Geography (General)
72
Cartography
48
GA101-1776
48
GF1-900
42
Human ecology. Anthropogeography
42
QL1-991
37
Zoology
37
P1-1091
28
Philology. Linguistics
28
Language and Literature
23
P
23
Language. Linguistic theory. Comparative grammar
15
P101-410
15
Literature (General)
14
PN1-6790
14
Food processing and manufacture
13
TP368-456
13
Ethnology. Social and cultural anthropology
12
GN301-674
12
GV1-1860
12
Recreation. Leisure
12
B
11
Philosophy. Psychology. Religion
11
K
10
Law
10
D1-2009
9
H
9
History (General)
9
Social Sciences
9
AZ20-999
8
French literature - Italian literature - Spanish literature - Portuguese literature
8
History of scholarship and learning. The humanities
8
PQ1-3999
8
Communication. Mass media
7
D111-203
7
G
7
Geography. Anthropology. Recreation
7
Medieval history
7
P87-96
7
Aesthetics of cities. City planning and beautifying
6
Cadastral mapping
6
D
6
Education
6
Education (General)
6
GA109.5
6
History (General) and history of Europe
6
L
6
L7-991
6
NA9000-9428
6
more ...