Columbia subject headings:
Agricultural ecology--Brazil.
Rural development--Brazil.
Sustainable agriculture--Brazil.
Harvard subject headings:
Agricultural ecology--Brazil.
Family farms--Brazil--Congresses.
Rural development--Brazil
Rural development--Brazil--Congresses.
Rural development--Government policy--Brazil--Congresses.
Sustainable agriculture--Brazil.
Sustainable development--Brazil--Congresses
Princeton subject headings:
Agricultural ecology--Brazil.
Rural development--Brazil.
Sustainable agriculture--Brazil.