000 00252nam a2200109Ia 4500
008 220201s1990 xx 000 0 eng d
100 _aWORLD BOOK
245 0 _aMEDICAL ENCYLOPEDIA
260 _aU S A
_bWORLD BOOK
_c1990
300 _a1072
942 _2ddc
999 _c91088
_d91088