सेफ्टी पिन की खोज किसने की थी ? - Study24x7
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554 followers study24x7 18 Feb 2019 12:02 PM study24x7 study24x7

सेफ्टी पिन की खोज किसने की थी ?

सेफ्टी पिन की खोज कि...
A

जॉन पेबबर्टन

B

बेंजामिन फ्रैंकलिन

C

वाल्टर हंट

D

लेनिन

SSC Defence Railways
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