000 00283nam a2200109 4500
008 160622b xxu||||| |||| 00| 0 eng d
100 _9548
_aDilley et, al
245 _aHeath Mathematics
260 _aToranto
_b D.C Heath & Comp
_c1975
300 _aHeath Meathematics
942 _2ddc
_cBK
999 _c457
_d457