"This report presents the results of the pre-impoundment investigations" of Ray Roberts Lake. The purpose of the study is "to improve understanding of the impact of [U.S. Army Corps of Engineers] water resource projects, to provide the basis for evaluating the projects' effects on fish and wildlife resources, and to provide the opportunity for better planning and development of water resource projects and natural resource management" in the Lake Ray Roberts area, located in Denton County, Texas (p. 3).

This report describes archaeological testing at a site known as Fort St. Leon in Louisiana. Studies were made of levee building, geomorphology, and comparison of archival maps and aerial photographs, which contribute to the understanding of human activity as well as geological processes at the site.

This report is on a case study from Guatemala on malnutrition and food aid programs. The purpose of this study is to examine the impact of food aid and/or food aid programs on the nutritional status of its recipients in two regions of Guatemala. From this investigation, empirically-based programmatic statements as to the role of food aid and its impact on human society will be presented.

Article discussing research on carbon K-shell x-ray and Auger-electron production in hydrocarbons and carbon oxides by 0.6-2.0-MeV protons.

This article discusses fast diffusion of As in polycrystalline silicon during rapid thermal annealing.

Article on experimental artifacts and determination of accurate Py values.

Reports on Venezuela mini-workshops held in Caracas and Mérida in May 1989 on national problems caused by global climate change.

Article on the thermochemical excess properties of multicomponent systems and representation and estimation from binary mixing data.

Article on high-temperature photochemistry and BAC-MP4 studies of the reaction between ground-state H atoms and N2O.