01972oam 2200541 450 991070541720332120170425072208.0(CKB)5470000002451218(OCoLC)889723429(EXLCZ)99547000000245121820140901d1994 ua 0engurn||||||||||txtrdacontentcrdamediacrrdacarrierAn empirical assessment of refraction error in leveling as a function of survey order and environment /by Robert O. Castle, Robert K. Mark, and Roger H. ShawWashington :United States Government Printing Office,1994.1 online resource (50 pages) illustrationsU.S. Geological Survey bulletin ;2114"An analysis of the results of three North American field experiments designed to measure the systematic component of the atmospheric refraction error in leveling."Title from title screen (viewed August 28, 2014).Also available online in PDF format from the U.S. Geological Survey Warehouse (http://pubs.er.usgs.gov/).Includes bibliographical references (pages 49-50).LevelingRefractionSurveyingLevelingfastRefractionfastSurveyingfastLeveling.Refraction.Surveying.Leveling.Refraction.Surveying.Castle Robert O.1395430Mark Robert K.Shaw Roger H.Geological Survey (U.S.),COPCOPOCLCOOCLCFBOOK9910705417203321An empirical assessment of refraction error in leveling as a function of survey order and environment3532572UNINA