social system
社会制度、社会体制、社会システム
Economic system
Heliotropic hypothesis
Open and closed systems (social science)
Political system
Social network
Social structure
Social web
Society
Social rule system theory
Systems psychology
Systems theory in anthropology
/suto3/google.iconsocial system
image social system
define social system
wikipedia social system
weblio social system
kotobank social system
jisho social system