TY  - BOOK
AU  - BUTTENFIELD,BARBARA
AU  - MCMASTER,ROBERT B
TI  - MAP GENERALZATION: MAKING RULES FOR KNOWLEDGE REPRESENTATION / 
U1  - 526\B M 
PY  - 1991///
CY  - [S.N] : 
PB  - LONFMSN SCIENTIFIC TECHNICAL ، 
KW  - CARTOGRAPHY
KW  - CONFERENCES
ER  -