Columbia subject headings:
Amu Darya Valley--Antiquities--Congresses.
Amu Darya Valley--Civilization--Congresses.
Ethnology--Asia, Central--Congresses.
Harvard subject headings:
Amu Darya Valley--Antiquities--Congresses.
Amu Darya Valley--Civilization--Congresses.
Ethnology--Asia, Central--Congresses.
Princeton subject headings:
Amu Darya River Valley--Antiquities--Congresses.
Amu Darya River Valley--Civilization--Congresses.
Ethnology--Asia, Central--Congresses.