00499nam a22001577a 4500 230703b |||||||| |||| 00| 0 eng d National Science Library National Science Library 52 P2 Salwi, Dilip M 1000 खगोल विज्ञान प्रश्नोत्तरी 1000 khagol vigyan prashnottari Delhi: Satsahitya prakashan, 2002 207p. Science udc HBK 48820 48820 0 0 udc 0 52_P2 0 75726 NSL NSL GF/Rk-2/C-9/R-1 2003-07-02 0 52 P2 181519 2023-07-03 00:00:00 2003-07-02 HBK