Columbia subject headings:
Rice--Economic aspects--Southeast Asia.
Rice--Economic aspects--Sri Lanka.
Rice--Social aspects--Southeast Asia.
Rice--Social aspects--Sri Lanka.
Rice--Southeast Asia.
Rice--Sri Lanka.
Southeast Asia--Rural conditions.
Sri Lanka--Rural conditions.
Harvard subject headings:
Rice--Economic aspects--Southeast Asia.
Rice--Economic aspects--Sri Lanka.
Rice--Social aspects--Southeast Asia.
Rice--Social aspects--Sri Lanka.
Rice--Southeast Asia.
Rice--Sri Lanka.
Southeast Asia--Rural conditions.
Sri Lanka--Rural conditions.
Princeton subject headings:
Rice--Asia, Southeastern.
Rice--South Asia.
South Asia--Rural conditions.
Southeast Asia--Rural conditions.