6 1 50 Kreyszing, Erwin Primary Author mixed material 0471889415 Canada John Wiley 1983 Isnanin Nurul Istiqamah Primary Author mixed material UHO KENDARI F-MIPA/Matematika 2018 J.H. Steele Primary Author mixed material 0126652503 Hoboken, NJ Academic press 1977 Frank K. Lester, Jr. dkk, Primary Author mixed material 00218251 Upper Saddle River, NJ Apress NOVEMBER 1993, Frank K. Lester, Jr. dkk, Primary Author mixed material 00218251 U.S.A. AMERICA SERIKAT POSTMASTER NOVEMBER 1993, henry van engen,dkk Primary Author mixed material 00218251 American student' use part-whole and direct comparison january 1995