000			00419nam a22000977a 4500
008			230406s1977 us ||||| |||| 00| 0 eng d
245			_aMcGraw-Hill encyclopedia of science and technology : _ban international reference work in fifteen volumes including an index : Vol. 2 : Bab-cet / _cMacgraw Hill Book Co.
250			_a[4th ed.]
264			_aNew York : _bMcGraw-Hill, _c[1977].
653			_aმეცნიერება
999			_c667601 _d667599