Columbia subject headings:
Harvard subject headings:
Harbors--Argentina--Chaco--History.
Harbors--Argentina--Formosa--History.
Inland navigation--Argentina--Chaco--History.
Inland navigation--Argentina--Formosa--History.
Inland water transportation--Argentina--Chaco--History.
Inland water transportation--Argentina--Formosa--History.
Princeton subject headings:
Harbors--Argentina--Chaco--History.
Harbors--Argentina--Formosa (Province)--History.
Inland navigation--Argentina--Chaco--History.
Inland navigation--Argentina--Formosa (Province)--History.
Inland water transportation--Argentina--Chaco--History.
Inland water transportation--Argentina--Formosa (Province)--History.