000 00491nam a2200157Ia 4500
005 20260205063313.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a507.2 R137D
100 _aRajaram, Kalpana, ed.
245 0 _aDevelopments in science and technology
260 _aNew Delhi
_bSpectrum books
_c2017
300 _a704p.
690 _aCompetitive exam ;Exam - civil services mains ;Science and technology
700 _aRajaram, Kalpana, ed./Suri, R.K., ed./
942 _cBK
999 _c183384
_d183384