Some third-party sites claim to sell old Autodesk software. : These are often counterfeit or contain malware. Legitimate resellers of used software licenses exist but are rare. Always verify:
If you are looking for this specific vintage of plant design software, it is likely you are seeking the version built on the or the earliest iteration of Autodesk's dedicated plant toolset. 🏗️ The Origin of AutoCAD Plant 3D