000			00424nam a2200157 4500
003			OSt
008			220602b |||||||| |||| 00| 0 eng d
082			_a507 _bCON
100			_aConant,James B.
245			_aOn Understanding Science
260			_aAmerica: _bA mentor book, _c1951.
300			_axv,144p.; _c18cm
650		0	_a Education, Research, Related Topics
650		0	_aMahinda Ranaweera Collection
942			_2ddc _cSR
999			_c93688 _d93688