Spatial diffusion: Gould, Peter R. (1969): Research Paper No. 4, Commission on College Geography, Association of American Geographers. Washington, D.C. 72s.
Jürgen StrasselVolume:
2
Year:
1971
Language:
german
DOI:
10.1016/0016-7185(71)90136-9
File:
PDF, 167 KB
german, 1971