Usna ėkn-bulg
Publisher: Khalʹmg degtr ḣarḣach
Published: 1969
Place of publication: Ėlst
Language: mon
Number of pages: 349
Other titles: Reki nachinai︠u︡tsi︠a︡ s istokov.
Notes: Title in colophon: Reki nachinai︠u︡tsi︠a︡ s istokov.