منبع : GEOTECHNICAL ENGINEERING

Guide to in-situ testing . by : P.K. Robertson

 (Gregg Drilling & Testing Inc.  (January 2006

Including : CPT , SPT , FVT , DMT & PMT  tests

 File size : 5.3 MB 

http://irangeo.webs.com/guide%20to%20insitu%20testing%20soil.pdf

منبع : http://www.irangeo.webs.com
منبع

a field guide for geotechnical engineers.

http://www.4shared.com/file/152431735/26644574/HUNT_-_Geotechnical_Investigat.html?s=1