@book{UBHD-1120747, author={H{\"a}gerstrand, Torsten}, title={The propagation of innovation waves}, publisher={Royal Univ.}, address={Lund}, year={1952}, pages={20 S.}, language={eng}, number={ARRAY(0x55d536bc2bd8)}, series={Lund studies in geography}, keywords={Innovation / Kraftfahrzeug ; Schweden / Motorisierung}, library={UB [Signatur: 69 R 33] ; WS [Signatur: WS/RB 10801 H133]}, }