na INLIS000000000000254 20230209064620 0010-0223000136 ta 230209 0 978-979-534-457-5 252 252 J. l J. Douglas Faires Langkah Pertama Menuju Olimpiade Matematika Cet. 1 Klaten : The Mathematical Association of America, 2009 307 ; 30 cm NON FIKSI 100259