Keilhau, W. (1951). Principles of private and public planning: Study in economic sociology.
Dyfyniad Arddull ChicagoKeilhau, Wilhelm. Principles of Private and Public Planning: Study in Economic Sociology. 1951.
Dyfyniad MLAKeilhau, Wilhelm. Principles of Private and Public Planning: Study in Economic Sociology. 1951.
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