http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Operating instructions for dynamic pile force readout, Model 2174
an instrument for measuring peak force on piles during driving
by Lionel J. Milberger and Richard A. Zimmer.
Research study number 2-5-73-174, Analysis of piling behavior. In cooperation with the Texas Highway Department and the Federal Highway Administration.