000 00325nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a505 B862
100 _aCalhoun, David
245 0 _a1991 BRITANNICA YEAR BOOK OF SCIENCE AND THE FUTURE
260 _aCHICAGO
_bWILLIAM BENTON
_c1993
300 _a28X23
942 _cBK
_2DDC
999 _c22921
_d22921