Report on Bentonite, Its Use by Region 2, Forest Service, U.S. Department of Agriculture as Impediment to Seepage in Small Dam Construction, by Ben F. Powell.Ben F. Powell1940EN
Commercial snap bean production green and wax / D. Curwen, E.K. Wade, J.L. Libby, R.D. PowellDavid. Curwen1972EN
Skills in Motion Charlotte Stock Ben Powell Skateboarding Step by Step The Rosen Publishing Group 2009eu