Name	Info	Provider	Link
Full text from the Univ. of Michigan Library	free resource	MLibrary (Deep Blue)	http://hdl.handle.net/2027.42/152731
Color Blindness	free resource	MedlinePlus Health Information	https://medlineplus.gov/colorblindness.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31544997.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31544997/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31544997
	subscription/membership/fee required	Wiley	https://doi.org/10.1002/humu.23920