Dūdulis (m)
Krimulda municipality [NE of Riga, in Vidzeme [the Middle Land], a historical and cultural region in north-central Latvia, north of the Daugava River].
Muktupāvels, Valdis: Latviešu mūzikas instrumentu sistemātika [Thesis]. Rīga, 1999, p.114, 130 (& 142 [index]).