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All Collections
Africana Studies Collection
Africana Posters Collection
African e-Journals Project
Duane Mezga Holocaust Sites Photographs
Electronic Theses & Dissertations
Ergonomics Research Laboratory Reports
Feeding America
Feeding America Museum Objects
Recipes
Ingredients
Feeding Michigan
Grange Visitor Collection
Graphic Narratives Network Collection
G. Robert Vincent Voice Library
Interviews with Michigan Supreme Court Justices
Voices of the Black Imaginary
Women's Overseas Service League Oral Histories Collection
Hong Kong Anti-Extradition Bill Protests Collection
Maps Collection
Michigan Farming Journals
Michigan Business Farmer
Michigan Farmer and Livestock Journal
Michigan Farmer and State Journal of Agriculture - Household Supplement
Michigan Potato Research Reports Collection
Michigan Tradesman Collection
Midwest Chicano Latino Activism Collection
Radicalism and Activism Posters Collection
Leftist Political Posters Collection
Radicalism Posters Collection
Red Cedar Review
Shaping the Values of Youth
Short Editions
Turfgrass Information Center Resource Archive
Australian Turfgrass Management Journal
Chips & Putts
Connecticut Clippings
Dr. James R. Watson, Jr. Image Archive
Golf Course Superintendents Association of New Jersey Collection
The Green Sheet
Gressforum
Iowa Turfgrass Research Report
Lawn Care Industry
Michigan Golf Course Superintendents Association Collection
The Newsletter of the Golf Course Superintendents Association of New England, Inc
Northwest Turfgrass Topics
Proceedings of the Mid-Atlantic Turf Conference
Proceedings of the Midwest Regional Turf Conference
Proceedings of the Northwest Turfgrass Conference
Scotts
Tee to Green
TurfComms
Turfgrass Producers International Collection
United States Golf Association Turfletters
University Archives and Historical Collections
Civil War Collections
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(1 - 2 of 2)
Title
Sign legibility as a function of sign luminance, ambient illumination, contrast direction, contrast level, and age and adaptation level of observers
Creator
Dyer, Frederick N.
Date
1965
Collection
Electronic Theses & Dissertations
Title
The effect of the Purkinje shift on the brightness of highway signs at night
Creator
Fry, John Pray, 1939-
Date
1967
Collection
Electronic Theses & Dissertations
