000 00308nam a2200121Ia 4500
008 140224s9999 xx 000 0 und d
082 _aR 5(03) L0.7
245 _aThe book of popular science.
260 _aNew York
_bGrolier
_cc 1970
300 _av.7, 428p.
650 _aScience-encyclopaedia
942 _cBK
999 _c96395
_d96395