000 00270nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _a5+6(058)
_bMCG
245 0 _aMcGraw Hill yearbook of science and technology. 1977
260 _aNew York
_bMcGraw Hill
_c1974
942 _cBK
999 _c26963
_d26963