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020 _a70792801
041 _aEN
082 _a503
_bMAC
_223
245 _aMcGraw-Hill Encyclopedia of Science & Technology /
250 _a5th ed.
260 _aNewYork
_bMcGraw-Hill
_c1982
300 _a15 v.(v.5-800; v.6-814; v.7-879; v.8-868; v.9-924; v.10-854;
509 _aNS
942 _cPR