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Preamble-Part 2
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This lesson is a continuation of the previous one with regard to the expressions contained in the Preamble.

Sweta Chowdhury
Xaverian and Presidencian possessing B.A. and M.A. in Political Science with a quest for liberating through knowledge. UGC NET qualified.

Unacademy user
Spitzer: an infrared space telescope launched in 2003. A part of the Great Observatories Program of NASA. Earlier known as SIRTF(Space Infrared Telescope Facility)
Kapil Kathpal
9 months ago