TY  - BOOK
AU  - Kavovras Marinos
AU  -  Kokla Margarita
TI  - Theories of geographic concepts:  Ontological approaches to semantic integration   
U1  - U:(D6,9(B), P8 
PY  - 2008///
CY  - Boca Raton 
PB  - CRC Press        
KW  - Geography
N1  - Bibliography P 307-310
ER  -