TY  - BOOK
AU  - Gaile,Gary L.
TI  - Notes on the concept of spread / 
U1  - AF PSF 338.9676 N36 no.219 
PY  - 1975///
CY  - Nairobi : 
PB  - Institute for Development Studies, University of Nairob i, 
KW  - Regional planning
KW  - Central places
N1  -  Bibliography: p. 26-29
ER  -