V Economics > V.11 Regional science > V.11.01 Regional economics > Inter-regional trade

V Economics > V.07 International economics > V.07.03 International economic relations > V.07.03.01 Foreign trade > Inter-regional trade

W Economic sectors > W.10 Trade > Trade > Inter-regional trade

V Economics > V.11 Regional science > V.11.07 Economic geography > Inter-regional trade