TY  - BOOK
AU  - Downs,Roger M.
AU  - Stea,David
TI  - Maps in minds: reflections on cognitive mapping 
T2  - Harper & Row series in geography
SN  - 0060417331
AV  - G71.5 D67
PY  - 1977///
CY  - New York
PB  - Harper & Row
KW  - Percepción geográfica
ER  -