000 00262nam a22001097a 4500
005 20201121135710.0
008 201121b ||||| |||| 00| 0 eng d
022 _a0250-6335
245 _aAstrophysics & Astronomy
260 _aNew Delhi
_bSpringer
_c,
942 _cJU
_s1
999 _c285
_d285