With Grammar of Duhumbi (Chugpa), Timotheus Adrianus (Tim) Bodt provides the first comprehensive description of any of the Western Kho-Bwa languages, a sub-group of eight linguistic varieties of the Kho-Bwa cluster (Tibeto-Burman). Duhumbi is spoken by 600 people in the Chug valley in West Kameng district, Arunachal Pradesh, India. The Duhumbi people, known to the outside world as Chugpa or Chug Monpa, belong to the Monpa Scheduled Tribe. Despite that affiliation, Duhumbi is not intelligible to speakers of any of the other Monpa languages except Khispi (Lishpa). The volume Grammar of Duhumbi (Chugpa) describes all aspects of the language, including phonology, morphology, lexicon, syntax and discourse. Moreover, it also contains links to additional resources freely accessible on-line.