na INLIS000000000000007 20210322155254 210322||||||||| | ||| |||| || | 9794211044 010-0321000007 id 001.42 001.42/SUR/m SURYABRATA, Sumadi Metodologi Penelitian Ed.2.Cet.15 Jakarta PT.Raja Grafindo Persada 2003 xiv,166 hal. ; 21 cm Metodologi penelitian