na INLIS000000000037047 20130612142809 Ind 010-061300000037047 Ind 372.3 372.3, Sap s Saptorini, Kushartati Seni sains dasar energi, Kushartati Saptarini dan Tasik Elemen 2009 Jakarta 32 hlm, ilus, 20 cm Pendidikan dasar-sains Elman, Tasik NBPNMAT