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American Optical Corp. (AO), Buffalo, NY:
1950   Complete Equipment for Phase Microscopy
1950   Phase Microscope Price List
1955   Spencer Medical Microscopes
1974    Differential Interference Contrast by Incident Light (DICV) Microscopes
Undated           AOUndated     AO-Total Solids Meter: a Goldberg Refractometer
Undated     AO Laboratory Microscopes

American Society for Metals: undated, And Now There are Six Volumes of Metals Handbook

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