From purpose and scope: The U.S. Geological Survey, in cooperation with Lee County, conducted an investigation of the river in 1976-79. This investigation was planned to provide a broader base if information than heretofore available on the freshwater resources of the Caloosahatchee River basin, and in particular to provide information on water-quality conditions with emphasis on nutrients and algal growth. In addition to data collected during 1976-79, some earlier data collected by the U.S. Geological Survey were included to evaluate annual variation and trends.

Compilation of papers presented during the third session of the Second International Conference on Marine Debris, held by the National Oceanic and Atmospheric Administration in Hawaii, April 1989. This session includes 151 papers describing various impacts that debris ingestion has on marine animals and the environment.

Compilation of papers presented during the second session of a workshop on the Fate and Impact of Marine Debris, held by the National Oceanic and Atmospheric Administration in Hawaii, November 1984. This session includes 11 papers describing various impacts that debris entanglement has on marine animals and the environment.

Report presenting testing in the variable density wind tunnel on two airship models known as the NPL Standardization Models, long and short. The resistance or shape coefficients were determined for each model through a range of Reynolds numbers. Further work is found to be necessary in the standardization of wind tunnels.

A report about waters of the Coastal Plain region of the Atlantic Slope. Most of the waterways are of bad quality in the Coastal Plain. It discusses the hygiene of various waterways of the region.

Report consisting of a summary and papers covering the activities occurring during the year 1956 in the National Advisory Committee for Aeronautics. The paper is broken up into letter of transmittal, letter of submittal, the technical activities, committee organization and membership, and the financial report.

From Introduction: "Problems connected with incidence, effects, determination, and control of dusts are still much before the public, although more information is available to the layman than when Bulletin 400, of which this publication is a revision, was issued in 1937. This revision includes data that have accumulated since 1937 and some that appeared previous thereto but were not available to the authors at that time."

A report on zinc and its alloys.

Report issued by the Bureau of Standards discussing world production of zinc and zinc alloys. History, metallurgy, and structural properties of zinc are presented. This report includes tables, illustrations, and photographs.

A collection of papers which report on the geologic investigations in Alaska. It represents the broad range of U.S. Geologic Survey research activities carried out in Alaska.

Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, summaries of the committee's activities and research accomplished, bibliographies, and financial report.

Report issued by the Bureau of Mines over mineral characteristics, uses, and problems. Descriptions of common minerals and their uses are presented and discussed. This report includes tables, maps, and illustrations.