00487nam a2200205Ia 4500 OSt 20241104152944.0 210210b1978 xxu||||| |||| 00| 0 eng d AL eng 522.7 KHAS KHANNA (M L) 184060 Sperical astronomy Meerut Jai Prakash Nath & Co 1978 412 Spherical astronomy 184061 Astronomy 184062 028718 ddc BK 79955 79955 0 0 ddc 0 0 PHY AL AL 2021-02-17 8.50 0 522.7 KHAS 028718 2021-02-17 00:00:00 2021-02-17 BK