00573nam a22001577a 4500 0 0 0 0 LCC LCC 2019-04-14 Purchased: Allied book company 970.84 2 523.01 BAS 39031 2023-07-17 00:00:00 2023-06-08 1 BK 21-12-2022 transfer 0 0 0 0 LCC LCC 2019-08-31 Purchased: Allied Books Company 989.19 0 523.01 BAS 39490 2019-08-31 00:00:00 2 BK 24394 24394 9788120340718 (pbk) 523.01 BAS Basu, Baidyanath Tanuka Chattopadhyay Sudhindra Nath Biswas An introduction to astrophysics Delhi PHI Learning Private Limited 2019 xviii, 582 p. : ill. ; 23 cm. Includes index. Astrophysics Physics Astronomical instruments Bio-Astronomy Variable stars Cosmology Magnitude Galaxy Motion RICAS BK