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020 _a50078
041 _aEN
082 _a32
_bNIN
_223
245 _aNINETEEN seventy seven Britannica book of the year
260 _aChicago
_bEncyclopaedia Britannica
_c1977
300 _a768 p.
509 _aNS
650 _aEncyclopaedia
942 _cPR