Materia
G Geography (General)
192
GB Physical geography
48
GE Environmental Sciences
47
GF Human ecology. Anthropogeography
34
H Social Sciences (General)
15
S Agriculture (General)
13
SD Forestry
12
T Technology (General)
12
GEOGRAFÍA
10
GEOGRAPHY
10
GV Recreation Leisure
10
HN Social history and conditions. Social problems. Social reform
9
GA Mathematical geography. Cartography
8
HC Economic History and Conditions
8
HT Communities. Classes. Races
8
QL Zoology
8
GT Manners and customs
7
LB2300 Higher Education
7
QH Natural history
7
SB Plant culture
7
Costa Rica
6
GC Oceanography
6
Q Science (General)
6
geography
6
COSTA RICA
5
Geografía
5
Geography
5
HB Economic Theory
5
HF Commerce
5
L Education (General)
5
QH301 Biology
5
SF Animal culture
5
GR Folklore
4
HM Sociology
4
JA Political science (General)
4
LATIN AMERICA
4
TC Hydraulic engineering. Ocean engineering
4
geografía
4
GEOGRAPHY EDUCATION
3
GN Anthropology
3
HD Industries. Land use. Labor
3
HISTORIA
3
HISTORY
3
Historia
3
History
3
QE Geology
3
SECONDARY EDUCATION
3
SH Aquaculture. Fisheries. Angling
3
TD Environmental technology. Sanitary engineering
3
condiciones de salud
3
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