Columbia subject headings:
Harvard subject headings:
Cooperation--Italy--Piave River Valley--History--Sources.
Cooperation--Italy--Piave River Valley--History.
Cooperative societies--Italy--Piave River Valley--History.
Labor unions--Italy--Piave River Valley--History.
Piave River Valley (Italy)--Rural conditions.
Princeton subject headings:
Cooperation--Italy--Piave River Valley--History--Sources.
Cooperation--Italy--Piave River Valley--History.
Cooperative societies--Italy--Piave River Valley--History.
Labor unions--Italy--Piave River Valley--History.
Piave River Valley (Italy)--Rural conditions.