Roof and rib fall accident and cost statistics :
an in-depth study /
by Deno M. Pappas.
APA Citation
Pappas, D. M. (1987). Roof and rib fall accident and cost statistics: an in-depth study. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines.
MLA Citation
Pappas, Deno M. Roof And Rib Fall Accident And Cost Statistics: an In-depth Study. Pittsburgh, Pa.: U.S. Dept. of the Interior, Bureau of Mines, 1987.
Warning: These citations may not always be complete (especially for serials).