*h₃rdʰ‑uo‑

http://lila-erc.eu/data/lexicalResources/BrillEDL/id/etymon/pie0073 an entity of type: Etymon

Etymology for: arduus (la0104)
*h₃rdʰ‑uo‑
*h₃rdʰ‑uo‑ 
89907 
PIE 

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