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TitleDateType
1 A thermocouple psychrometer for measuring the relative vapor pressure of water in liquids or porous materials [manuscript]1963-03-30Text
2 Envelope postmarked 30 March 1963 at Riverside, California, addressed to Zilla Richards1963-03-30Text
3 Letter dated 30 March 1963 from Evelyn Spieth to Zilla Linford Richards1963-03-30Text
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