Technology and the neurologically handicapped : a conference cosponsored by the National Aeronautics and Space Administration and the United Cerebral Palsy Foundation, and held at Ames Research Center, Moffett Field, California, September 8-10, 1971

Includes bibliographies

Wetlands of the United States : current status and recent trends /

Mode of access: Internet.

Coastal wetlands of the United States : an accounting of a valuable national resource /

Mode of access: Internet.

Comparative administrative law; an analysis of the administrative systems, national and local, of the United States, England, France and Germany,

"List of authorities". v. 2, p. 303-307.

NASA authorization for fiscal year 1978 [microform] : hearings before the Committee on Commerce, Science, and Transportation, United States Senate, Ninety-fifth Congress, first session, on S. 365 ...

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

NASA authorization for fiscal year 1980 [microform] : hearings before the Committee on Commerce, Science, and Transportation, United States Senate, Ninety-sixth Congress, first session, on S. 357 ....

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

NASA authorization for fiscal year 1981 [microform] : hearings before the Committee on Commerce, Science, and Transportation, United States Senate, Ninety-sixth Congress, second session, on [S.2238... and] S. 2240 ....

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

NTIA authorization : hearing before the Subcommittee on Communications of the Committee on Commerce, Science, and Transportation, United States Senate, One hundredth Congress, first session on reauthorization of the National Telecommunications and Information Administration for fiscal years 1988 and 1989, March 26, 1987.

Shipping list no.: 87-350-P.

Management and program weaknesses at the National Aeronautics and Space Administration and the National Science Foundation : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifth Congress, first session, July 24, 1997.

Shipping list no.: 99-0090-P.

Military interference with elections : speech of Hon. L.W. Powell, of Kentucky, delivered in the Senate of the United States, March 3 and 4, 1864, on the bill to prevent officers of the Army and Navy, and other persons engaged in the military and naval service of the United States, from interfering in elections in the states.

Mode of access: Internet.

The prevalence of refractive errors among adults in the United States, Western Europe, and Australia.

OBJECTIVE:

To estimate the prevalence of refractive errors in persons 40 years and older.

METHODS:

Counts of persons with phakic eyes with and without spherical equivalent refractive error in the worse eye of +3 diopters (D) or greater, -1 D or less, and -5 D or less were obtained from population-based eye surveys in strata of gender, race/ethnicity, and 5-year age intervals. Pooled age-, gender-, and race/ethnicity-specific rates for each refractive error were applied to the corresponding stratum-specific US, Western European, and Australian populations (years 2000 and projected 2020).

RESULTS:

Six studies provided data from 29 281 persons. In the US, Western European, and Australian year 2000 populations 40 years or older, the estimated crude prevalence for hyperopia of +3 D or greater was 9.9%, 11.6%, and 5.8%, respectively (11.8 million, 21.6 million, and 0.47 million persons). For myopia of -1 D or less, the estimated crude prevalence was 25.4%, 26.6%, and 16.4% (30.4 million, 49.6 million, and 1.3 million persons), respectively, of whom 4.5%, 4.6%, and 2.8% (5.3 million, 8.5 million, and 0.23 million persons), respectively, had myopia of -5 D or less. Projected prevalence rates in 2020 were similar.

CONCLUSIONS:

Refractive errors affect approximately one third of persons 40 years or older in the United States and Western Europe, and one fifth of Australians in this age group.