Robert F. Wittwer

Applying a crop-tree release in small-sawtimber white oak stands

Gary W. Miller, Jeffrey W. Stringer, Robert F. Wittwer, 1988 .

Effects of stand development and weather on monthly leaf biomass dynamics of a loblolly pine (Pinus taeda L. ) stand

Robert F. Wittwer, Thomas C. Hennessey, P. M. Dougherty, 1995 .

Annual variation in needle fall of a loblolly pine stand in relation to climate and stand density

Robert F. Wittwer, Thomas C. Hennessey, Bert M. Cregg, 1992 .