000			00508nam a22001697a 4500
008			230711b |||||||| |||| 00| 0 eng d
040			_aNational Science Library _cNational Science Library
080			_a546-4 _bN4
100			_aTifonof, D
245			_aरसायनिक तत्वो की खोज
246			_aRasaynik tatwo ki khoj
260			_aDelhi: _bBharat Gyaan Vigyaan Prakashan, _c1994
300			_a319p.
650			_2Science
650			_2Chemistry
942			_2udc _cBK
999			_c51323 _d51323