Robert E. Hopkins (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Robert E. Hopkins" in English language version.

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low place

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1web.archive.org

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gulfcreek.com

robertehopkins.gulfcreek.com

"Robert Earl Hopkins". Optical Society of America. Archived from the original on 2016-09-23.

osa.org

"Past Presidents of the Optical Society of America". Optical Society of America.

web.archive.org

"Robert Earl Hopkins". Optical Society of America. Archived from the original on 2016-09-23.