Footnote, Chapter 11:
WEIRDO ZONE EXPLORATORY SERVICES
XENOLINGUISTICS DATABASE - REAVER LANGUAGE
3003 edition
"doru" <spelled phonetically> Monetary Unit. Roughly equivalent in value to the amount of grain needed to feed a village of 200 families, approximately 500 to 700 people. Similar in concept to the koku of the feudal period in Terran Japan.