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Optometry - Journal of the American Optometric Association > 2011 > 82 > 9 > 549-555
Telecommunications Policy > 2006 > 30 > 10-11 > 587-604
Telecommunications Policy > 2000 > 24 > 6-7 > 565-590
Optometry - Journal of the American Optometric Association > 2011 > 82 > 9 > 549-555
Telecommunications Policy > 2006 > 30 > 10-11 > 587-604
Telecommunications Policy > 2000 > 24 > 6-7 > 565-590