000			004230000a22001570004500
245			_aInteractive mathamatics : activities & investigations
260			_aNew York _bGlenco McGraw-Hill _c1995
300			_aviii, 48p. : col. photos.
440			_aUnit 18 Quality Control
500			_aIndex included.
020			_a0028245202
080			_a658.56 _bI6
650			_aQUALITY CONTROL
041			_aEN
942			_cBK _01
999			_c30099 _d30099