na INLIS000000000000146 20260506034858 0010-0824000146 260506 0 ind Metode Research / S. Nasution Nasution, Nasution Bandung : Jemmars, 1987 196 .hlm ; 21X14 cm 001.42 , N M C.1 001.42 Metode Riset Revisi 970911200000193