Materia
GC Oceanography
28
GE Environmental Sciences
11
Q Science (General)
7
SH Aquaculture. Fisheries. Angling
7
G Geography (General)
5
GF Human ecology. Anthropogeography
4
QL Zoology
4
SF Animal culture
3
GB Physical geography
2
H Social Sciences (General)
2
LB2300 Higher Education
2
QH301 Biology
2
HD Industries. Land use. Labor
1
HN Social history and conditions. Social problems. Social reform
1
L Education (General)
1
LC Special aspects of education
1
S Agriculture (General)
1
SB Plant culture
1
T Technology (General)
1