Dăduru Oya baḍa vitti
By: Ăn. Tī. Karuṇātilaka.
Publisher: Es. Goḍagē saha Sahōdarayō
Published: 1989
Place of publication: Koḷamba
Language: sin
Number of pages: 255
Subjects: Deduru River Valley (Sri Lanka)
Notes: Includes bibliographical references (p. 247-249)
In Sinhalese. 
Study of Deduru River Valley in Sri Lanka; includes a brief history.