Columbia subject headings:
Harvard subject headings:
Austronesian languages.
Morobe Province (Papua New Guinea)--Guidebooks.
Morobe Province (Papua New Guinea)--Languages.
Papuan languages.
Princeton subject headings:
Austronesian languages.
Linguistic geography.
Morobe Province (Papua New Guinea)--Description and travel.
Morobe Province (Papua New Guinea)--Languages.
Papuan languages.