00854nam#a2200277zcb4500 990000000240203331 AT-OBV 20230310191753.0 tu 930702|1993####|||###########|||#|#eng#c AC00661758 (AT-OBV)AC00661758 AC00661758 (Aleph)000000024ACC01 (DE-599)OBVAC00661758 TUW ger rakwb eng XD-US Pappas, Deno M. aut Behavior of simulated longwall gob material by Deno M. Pappas and Christopher Mark Washington, DC 1993 39 S. Ill., graph. Darst. Report of investigations / United States Department of the Interior, Bureau of Mines 9458 Literaturverz. S. 30 - 31 Mark, Christopher aut (AT-OBV)AC00073533 9458