"OWRR Project B-024-COLO.", "June 30, 1970.", "The work upon which this report is based was supported (in part) by funds provided by the United States Department of the Interior, Office of Water Resources Research, as authorized by the Water Resources Research Act of 1964, and pursuant to Grant Agreement No. 14-01-001-1883.", Includes bibliographical references., Mode of access: World Wide Web.
"Partial completion report OWRR Project A-001-COLO. Title: GROUND WATER.", "June 1969.", "The work upon which this reprot is based was supported (in part) by funds probided by the United States Department of the Interioer, Office of Water Resources Research, as authorized by the Water Resources Research Act of 1964, and pursuant to Grant Agreement No. A-001-Colo.", Includes bibliographical references (p. 32), Electronic reproduction., Title from PDF title page (viewed on Sept. 24, 2007)., Mode of access: World Wide Web.
by Thomas L. Dietrich and James R. Meiman., "April 1974.", Bibliography: page 27., Funds provided primarily by the U.S. Bureau of Reclamation under contract no. 14-06-D-6598., Print version record.
text file, Report 1: Spatial and temporal patterns and the chemical composition of the haze in the United States : an analysis of data from the IMPROVE network (February 1993) -- Report 2: Spatial and seasonal patterns and long term variability of the composition of the haze in the United States: an analysis of data from the IMPROVE network (July 1996) -- Report 3: Spatial and seasonal patterns and temporal variability of haze and its constituents in the United States (May 2000) -- Report 4: Spatial and seasonal patterns and temporal variability of haze and its constituents in the United States (November 2006) -- Report 5: Spatial and seasonal patterns and temporal variability of haze and its constituents in the United States (June 2011), Online resource; title from website (viewed October 2020)
"July 1972.", "This report was prepared with support provided by National Science Foundation Grants GA-26401 and GI-31460. Principal investigator, Lewis O. Grant.", Includes bibliographical references (p. 52-53), Mode of access: World Wide Web.
"Prepared for: North Platte Basin Roundtable...Colorado Water Conservation Board.", Description based on online resource; title from PDF title page (viewed October, 2010)., "January 2010.", Includes bibliographical references (p. 209-217)., Mode of access: World Wide Web.
"Completion report, OWRR project no. A-012-COLO", "January 31, 1972.", The work upon which this report is based was supported by a grant of $12,000 provided by the United States Department of the Interior, Office of Water Resources Research, as authorized under the Water Resources Research Act of 1964, and pursuant to Grant Agreement No. 14-31-0001-3006.", Includes bibliographical references., Mode of access: World Wide Web.
Includes bibliographical references (p. 21)., "December 15, 1993.", Grant no. 14-08-0001-G2008-2, project no. 02 ... financed in part by the U.S. Dept. of the Interior, Geological Survey through the Colorado Water Resources Research Institute...", Mode of access: World Wide Web.
We examine whether the use of open educational resources (OER), increasingly used as a reaction to high textbook costs, have a negative effect on performance of students. We analyze student performance data from courses using OER that had previously used commercial textbooks. We find no statistically significant results that OER use reduces student performance or, conversely, that the use of commercial textbooks improves student performance. Our research contributes to better understanding and awareness of OERs. It encourages public policies to support the creation and implementation of OERs to alleviate the burden of high textbook costs that disproportionately fall on low income students., Niroj Bhattarai and Jaren Seid., "February 2020.", Online resource; title from PDF caption (viewed May 2020)
