1. Res. Civ. Engr., U.S. Army Cold Regions Res. and Engrg. Lab., 72 Lyme Rd., Hanover, NH 03755-1290.
2. Res. Civ. Engr., U.S. Army Cold Regions Res. and Engrg. Lab., 72 Lyme Rd., Hanover, NH.
3. Res. Civ. Engr., Fed. Aviation Admin., FAA Tech. Ctr., Atlantic City, NJ 08405.