Rizaldo R. DESAIN SISTEM INFORMASI PERSEDIAAN MATERIAL PT WASKITA BETON PRECAST BERBASIS MICROSOFT VISUAL BASIC 6.0. valtech [Internet]. 2019Dec.20 [cited 2024Aug.25];1(2):23-9. Available from: https://ejournal.itn.ac.id/index.php/valtech/article/view/389