Ex.7

https://sourceforge.net/projects/librecad/files/

EX.6

https://drive.google.com/file/d/1u5rTFcAxwZVo4fd7taSosdVtwfid925A/view?usp=sharing


http://www.scilab.org/download/5.1.1/manual_scilab-5.1.1_en_US.pdf

EX.5

http://www.catc.or.th/2015/attachments/learning/Excel2007.pdf

EX.4

https://drive.google.com/file/d/1ivklcUZNxcZwYy4PxNjwLMRcKHvIHphm/view?usp=sharing

EX.3

http://kmcenter.rid.go.th/kmc10/data/inside%20article/2555/GIS.pdf

Ex.2

https://drive.google.com/file/d/1BdoFO3zzbrOWzBzbj2wCDJfIOaiu3H3P/view?usp=sharing


http://web.iitd.ac.in/~nomesh/MEL770/kelton.pdf

Ex.1

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.593.85&rep=rep1&type=pdf


http://help.arcgis.com/en/arcgisdesktop/10.0/pdf/geostatistical-analyst-tutorial.pdf