TY - RPRT TI - Improved stability of a deeply anchored geodetic monument for deformation monitoring AU - John O. Langbein AU - Frank Wyatt AU - Hadley O. Johnson AU - Duane Hamann AU - Paul Zimmer PY - 2012 DO - 10.1029/95gl03325 UR - https://pubs.usgs.gov/publication/70246539 ID - 70246539 ER -