000 00626nam a2200169 a 4500
001 4140
005 20140414131932.0
008 090218s19uu xx 00 eng d
020 _a0809448734
050 _aREF 620
_bCh43 1989
245 _aHow things work.
260 _aAlexandria, Va :
_bTime-Life Books,
_cc1989.
440 _aA Child's first library of learning
520 _aQuestions and answers provide information about how cameras, elevators, car engines, tops, yo-yos, and other devices work. Includes charts, diagrams, and an activities section.
541 _eM3469
650 _aTechnology
_xJuvenile literature.
999 _c112244
_d112244