TY  - BOOK
AU  - Rryon, Robert C.
TI  - Identification of social areas by cluster analysis: a general method with an application to the Sun Francisco Bay Area 
U1  - 301.152 
PY  - 1955///
CY  - Berkele
PB  - University of California press
KW  - Sociology
N1  - Includes bibliographical references
ER  -