Selection and Use of Bioenhancement Products and Processes, R-860 Gauger, K., R.E. Fronczak, M. Schlauch and C.P.L. Barkan. 1994. Selection and Use of Bioenhancement Products and Processes, R-860. Association of American Railroads, Washington Systems Center, Washington, DC. Files We're sorry. At this time, we do not have a full text copy of this text available. Categories Infrastructure