000			00266nam a2200097Ia 4500
008			220122s9999||||xx |||||||||||||| ||und||
245		4	_aThe world of science _bThe mechanics of life,No.12
260			_aNew Delhi _bS Chand and Company _c2001
300			_a124p.
942			_cBK
999			_c2860 _d2860