na INLIS000000000067128 20170727132959.0 170727| ||| | ind a 0010-071700000008080 Poerwanto Poerwanto Yogyakarta pustaka pelajar 2010 x, 249p ; 21 cm. 978-602-8764-78-0 370.115 370.115 Poe c 01 Social responsibility--educational objective 5121121711