$5 Bookshelf Bookcase Library 3D model by alexantropov1986. Available on CGTrader with 54625 polys and 56326 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 6.61 MB), OBJ (OBJ, filesize: 6.41 MB), FBX (Autodesk FBX, filesize: 2.58 MB), GLTF (glTF, filesize: 230 MB)