Tejen
Tejen,
river: see Hari RudHari Rud, river, c.700 mi (1,130 km) long, rising in the Kuh-e Baba range, central Afghanistan, and flowing west and then north into the steppes S of the Kara Kum desert in Turkmenistan; its lower course forms part of the Afghanistan-Iran and Iran-Turkmenistan borders.
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