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Found 21 results for "Spectograph"

A new prism for spectograph I
A new prism for spectograph I

by John Stanley Plaskett

1913 1 ed.
Spectographic Method For Determining the Hafnium-Zirconium Ratio in Zircon
Spectographic Method For Determining the Hafnium-Zirconium R...

by United States Geological Survey

1955 1 ed.