na INLIS000000000014015 20190424031147 0010-0419000663 ta 190424 i 0 ind 978-602-18739-4-6 510 510 SRI b Sri Widayati Berani coba ? : 160 tantangan matematika yang memeras otak / Sri Widayati Ed. 1 Yogyakarta : Bangkit, 2012 iv, 162 hlm : ilus ; 18 cm 4.129/BPAD/2013