000 00278nam a2200121Ia 4500
008 210901s1968 xx 000 0 eng d
082 _a503 POP
245 0 _aPopular science, Vol -1
260 _aNew York
_bGrolier
_c1968
300 _a420
650 _aScience
942 _2ddc
_cBK
999 _c6266
_d6266