Columbia subject headings:
Marginality, Social--Colombia--Congresses.
Poor--Colombia--Congresses.
Poverty--Congresses.
Harvard subject headings:
Marginality, Social--Colombia--Congresses.
Poor--Colombia--Congresses.
Poverty--Congresses
Princeton subject headings:
Marginality, Social--Colombia--Congresses.
Poor--Colombia--Congresses.
Poverty--Congresses.