TY  - BOOK
AU  - Clemmer, Gina
TI  - The Gis 20 Essential Skills 
SN  - 9781589485129
U1  - 910.285 
PY  - 2017///
CY  - Redlands, CA : 
PB  - Esri Press, 
KW  - Geographic Information Systems
N1  - YY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/978-1-58948-512-9.pdf
ER  -