Region
Asia, Southeastern
Asia, Southeastern --
28
United States --
6
China
5
China --
5
United States
5
Malaysia
3
Asia, Southeastren
1
Australia
1
Australia --
1
Chinese --
1
Indonesia --
1
Japan --
1
Kampuchea
1
Kampuchea --
1
Malaya --
1
Rural conditions
1
Russia
1
Russia --
1
Singapore
1
Soviet Union
1
Soviet Union --
1
Vietnam
1
Vietnam --
1