000 00283nam a22000977a 4500
008 230217b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _aWorld science news weekly
260 _aNew Delhi:
_bR D Kuchhal,
_c1986
942 _cCR
999 _c1929
_d1929