TY  - BOOK
AU  - Downs Roger M
AU  -  Stea David
TI  - Maps in minds:  Reflections on cognitive mapping   
T2  - Harper and Row series in geography
SN  - 0060417331
U1  - U12:(S:4).1.N7, L7 
PY  - 1977///
CY  - New York
PB  - Harper and Row USA      
KW  - Geography
ER  -