00370nam a22001577a 4500003000400000005001700004008004100021020001500062040000600077041000800083082001800091100001200109245003100121260005000152300001000202OSt20250509171208.0250509b        |||||||| |||| 00| 0 eng d  a0521080150  c0  aeng  a375.51 SCG65S  aF, Book  aSchool mathematics project  aNew Yorkb: Cambridge University Press,c1970  a165p.