TY - BOOK ED - Waterways Experiment Station (U.S.) TI - Forecasting trafficability of soils U1 - 624.15136 PY - 1971///, CY - Vicksburg, Miss. PB - U. S. Army Engineer Waterways Experimental Station, Corps of Engineers KW - Trafficability KW - Frozen ground KW - NUST / MCE ER -