Subject
Historical geography
3
Description and travel
2
Geography
2
Agriculture
1
Capital market
1
Colonies
1
Debts, External
1
Ethnobiology
1
Finance
1
Foreign economic relations
1
Foreign exchange
1
Health care reform
1
Human ecology
1
Indians
1
Indians, Treatment of
1
Land use
1
Landscape changes
1
Medical policy
1
Pensions
1
Public health
1
Rain forest ecology
1
Social aspects
1
Social conditions
1
Sociolinguistics
1
Spanish language
1