TY  - BOOK
AU  - Marble,D.F.
ED  - International Geographical Union.
ED  - United States.
TI  - Computer software for spatial data handling
U1  - 910.285425 
PY  - 1980///
CY  - Reston, Va.
PB  - U.S. Geological Survey
KW  - Geography
KW  - Computer programs
KW  - Cartography
KW  - Computer graphics
N1  - "Contract No. 14-08-0001-16560."; Item 621; Vol. 1. Full geographic information systems -- v. 2. Data manipulation programs -- v. 3. Cartography and graphics
ER  -