TY  - BOOK
AU  - Dent Borden D
TI  - Cartography:  Thematic map design   
SN  - 0697079910
U1  - U11, N0 
PY  - 1990///
CY  - New York
PB  - William C Brown USA      
KW  - Geography
N1  - Bib chapterwise ,Appendix p. 405-422,Glossary chapterwise
ER  -