000 00302nam a2200121Ia 4500
100 _aEncyclopaedia Britannica
942 _cBK
245 _a1981 yearbook of science and the future
260 _aChicago
_bEncyclopaedia Britannica
_c1980
082 _aR505.8
_bE.B.
300 _a448
546 _aEnglish
999 _c330211
_d330211
041 _aeng