000 00293nam a22001217a 4500
999 _c166338
_d166338
082 _a
_b
100 _aBernal J D
245 _aScience in history (v.3):
_b the natural science in our time/
_cby Bernal J D.
260 _a
_bPenguin,
_c1969.
300 _a1003p.
650 _a
942 _cBK