Tree height reduction for parallel processing of blocks of Fortran assignment statements.

Thesis (M.S.)--University of Illinois.

Possibilities of shelterbelt planting in the plains region. A study of tree planting for protective and ameliorative purposes as recently begun in the shelterbelt zone of North and South Dakota, Nebraska, Kansas, Oklahoma, and Texas by the Forest service; together with information as to climate, soils, and other conditions affecting land use and tree growth in the region.

On cover: Issued under special allotment to the Plains shelterbelt project, U.S. Forest service.

Climatic cycles and tree-growth,

Includes bibliographical references.

Sand ripple growth in an oscillatory-flow water tunnel /

The development of sand ripples in an oscillatory-flow water tunnel was observed in 104 laboratory experiments approximating conditions at the seabed under steady progressive surface waves. The period, T, and amplitude, a, of the water motion were varied over wide ranges. Three quartz sands were used, with mean grain diameters, D = 0.55, 0.21, and 0.18 millimeter. In 24 experiments, with the bed initially leveled, T was reduced until ripples appeared, and their development to final equilibrium form was observed without further change in T. The remaining 80 experiments investigated the response of previously established bed forms to changes in T or a or both. The ripple length, lambda, and height, eta, were measured from photos, except when bed forms were three dimensional.

Illinois Tree City USA : conference/awards ceremony : Managing the urban forest from inner city to outer edge.

The goal of the program is to encourage local communities to establish local community forestry programs and focus on continual growth and improvement of their local programs.

The practical planter, or, A treatise on forest planting : comprehending the culture and management of planted and natural timber, in every stage of its growth : also on the culture and management of hedge fences, and the construction of stone walls, &c /

Goldsmiths'-Kress no. 18632.

Seven species of broadleaf deciduous trees for windbreaks : effect of spacing distance and age on their survival and growth at Cheyenne, Wyo. /

Caption title.