Illustrated Introduction to TCP/IP: Understanding How It Works First Edition By Hiroshi Miyata Published by SB Creative Corp. I purchased this around 2021 for self-study, but I no longer have the opportunity to use it, so I'm offering it for sale. I've read only specific parts, and the rest I've only flipped through. I've checked for any writing, but there's a possibility I missed something. Please purchase only if you understand and accept this. Due to the thickness, it will be shipped with only waterproof packaging.