000 00275nam a2200097Ia 4500
082 _aRJ 500 YOUN
245 0 _aYoung scientist. Volume 15 : machines at work
100 _a World Book, Inc Bath, 1997
_947149
942 _cBK
008 210817s9999 xx 000 0 und d
999 _c154385
_d154384