000 00316nam a2200121Ia 4500
008 240531s9999 xx 000 0 und d
020 _a07 079798 6
082 _aR503 MCG
100 _aNULL
245 0 _aMcGraw Hill encyclopedia of science and technology
260 _aNew York
_bMcGraw-Hill
_c1971
942 _cBKS
999 _c302801
_d302801