TY  - BOOK
AU  - Hudson,John C.
ED  - Illinois.
TI  - Geographical diffusion theory
U1  - 910.182 
PY  - 1972///
CY  - Illinois
PB  - Deptment of Geography, Northwestern University
KW  - Culture diffusion
KW  - Geography
KW  - Study and teaching
N1  - Includes bibliographical references and index
ER  -