000 00302nam a2200097Ia 4500
008 200508s9999||||xx |||||||||||||| ||und||
082 _aE-621
245 0 _aHow things work : the universal encyclopedia of machines. Vol.1.
260 _aNew Delhi
_bHarper Collins Pub. India Pvt. Ltd.
_c1993
300 _a590p.
999 _c62196
_d62196