A: 2021 added:
For most workflows, 2020 is very stable and sufficient. autodesk autocad civil 3d 2020 free download 2021
A: Yes, Autodesk allows side-by-side installation of different versions. A: 2021 added:
A: No. Any website offering this is either providing a trial (official) or a virus (unofficial). For most workflows, 2020 is very stable and sufficient