171219 Gunnarsson, J. (1977). Production systems and hierarchies of centres: The relationship between spatial and economic structures. Leiden : Martinus Nijhoff Social Sc. Division.
Παραπομπή σε μορφή Chicago (17η εκδ.)171219 Gunnarsson, Jan. Production Systems and Hierarchies of Centres: The Relationship Between Spatial and Economic Structures. Leiden : Martinus Nijhoff Social Sc. Division, 1977.
Παραπομπή σε μορφή MLA (9th εκδ.)171219 Gunnarsson, Jan. Production Systems and Hierarchies of Centres: The Relationship Between Spatial and Economic Structures. Leiden : Martinus Nijhoff Social Sc. Division, 1977.
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