TY - BOOK AU - Kumar, Pawan TI - 35 Landmark scientific and technological developments : for UPSC and state PSC civil services prelim and main exams SN - 9789390486519 U1 - 351.076 PY - 2024///] CY - New Delhi PB - Disha Publication KW - Competitive Exams KW - Science KW - Technology ER -