Conference: Nondestructive and Automated testing for Soil and Rock Properties, San Diego, CA (US), 01/15/1998--01/16/1998; Other Information: PBD: 1999; Other Information: In: Nondestructive and automated testing for soil and rock properties. ASTM special technical publication 1350, by Marr, W.A.; Fairhurst, C.E. [eds.], 330 pages.