(A) Second permanent Maitree
(B) SODAR (Sonic Detection and Ranging)
(C) First permanent station ‘Dakshin Gangotri’
(D) None of the above
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(A) Second permanent Maitree
(B) SODAR (Sonic Detection and Ranging)
(C) First permanent station ‘Dakshin Gangotri’
(D) None of the above