Notes
बैरोमीटर का आविष्कार 1644 ई0 में हआ था।
बैरोमीटर का आविष्कार 1644 ई0 में हआ था।
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Hinglish Excerpt
Barometer ka Avishkar 1644 eesvi mein hua tha.
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Exams: UPSCUPPCSSSCRRBIBPSSBIRBICTETAFCATUGC NETDefence/PoliceUPPCLCourt/LegalOthers
