Notes
मोइक्रोफोन का आविष्कार 1876 ई0 में हआ था।
मोइक्रोफोन का आविष्कार 1876 ई0 में हआ था।
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Hinglish Excerpt
Microphone ka Avishkar 1876 eesvi mein hua tha.
Tags: 1876 ई0आविष्कारमोइक्रोफोन
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