Siegal Sadie
| Biografi |
It's been a long time given that we discussed security doors, so we believed it was due time for a refresher. Let's begin by reminding ourselves what they are and why we need them. What is a security door, and why do we need them? |
INDEXED BY:
This work is licensed under a Creative Commons Attribution 4.0 International License.
CSRID Journal Editor's Office:
Universitas Potensi Utama. Jl. K.L. Yos Sudarso Km 6,5 No.3-A Telp. (061) 6640525 Ext. 214 Tanjung Mulia Medan 20241