TY  - BOOK
AU  - Johnston, R. J.
TI  - Spatial structures: introducing the study of spatial systems in human geography 
T2  - The Field of geography
SN  - 0416766501
AV  - GF101 .J63 1973
U1  - 910 
PY  - 1973///
CY  - New York
PB  - Martin
KW  - Human geography
KW  - Spatial systems
N1  - Bibliography: p. [114]-126
ER  -