TY  - BOOK
AU  - Berry,Brian J.L.
AU  - Horton,Frank E.
TI  - Geographic perspectives on urban systems: with integrated readings 
SN  - 0133513122
PY  - 1970///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Cities and towns
N1  - Includes bibliographical references
ER  -