TY  - BOOK
TI  - Types of Maps
PY  - 1991///
CY  - Reston, VA
PB  - U.S Dept. of the Interior, U.S. Geological Survey
KW  - United States
N1  - Cover Tittle
UR  - http://catalog.gpo.gov/fdlpdir/locate.jsp?ItemNumber=621&SYS=000362755
ER  -