Can't append blend file, no folders or files inside. Blender 2.79 : r/blenderhelp
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El Brujo de la Tribu: Blender Cycles: Append / Link Material or Node Groups
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How to Append and link external elements in Blender 2.5 « Software Tips :: WonderHowTo
Blender: tutorial: Append
Append vs. Link objects in Blender | Q: If you make objects in separate Blender files can you then bring those objects together in one Blender file to create a new scene