Columbia subject headings:
Inland navigation--Environmental aspects--Bolivia.
Inland water transportation--Environmental aspects--Bolivia.
Paraguay River--Navigation.
Paraná River (Brazil-Argentina)--Navigation.
Puerto Busch (Bolivia)--History.
Harvard subject headings:
Inland navigation--Environmental aspects--Bolivia.
Inland water transportation--Environmental aspects--Bolivia.
Paraguay River--Navigation.
Paraná River (Brazil-Argentina)--Navigation.
Puerto Busch (Bolivia)--History.
Princeton subject headings:
Inland navigation--Environmental aspects--Bolivia.
Inland water transportation--Environmental aspects--Bolivia.
Paraguay River--Navigation.
Paraná River (Brazil-Argentina)--Navigation.
Puerto Busch (Bolivia)--History.