na INLIS000000000002520 20231129090419 0010-1123000095 ta 231129 g 0 ind 979-1073-61-9 300.72 300.72 ULB Ulber Silalahi Metode Penelitian Sosial / Ulber Silalahi 1, cet.ke-3 Bandung : PT. Refika Aditama, 2012 xx, 518 hlm : ilus. ; 160 x 235 cm Motode Penelitian Sosial hlm.518 2015001353