Toll, D.G. (2007) Geo-Engineering Data: Representation and Standardisation, Electronic Journal of Geotechnical Engineering, JTC2 Special Issue, http://www.ejge.com/2007/Ppr0699/Ppr0699.htm.

Toll, D.G. (2007) Geo-Engineering Data: Representation and Standardisation, Electronic Journal of Geotechnical Engineering, JTC2 Special Issue.

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