become one of my friends on my pesbuk

topik-topik….

bener gak sih ?

ridwan.staff.unri.ac.id-Google pagerank and Worth

arsip….

Books


List of published books

 

  1. Struktur Beton Dasar, 2009, Pusbangdik Universitas Riau, cover
  2. Analisis Struktur Metode Matrik – Soal dan Penyelesaian, 2012