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  1. Types of Fir Trees with Identification Guide and Pictures

  2. 12 Easy-to-Grow Types of Fir Trees - The Spruce

  3. 17 Different Types of Fir Trees & Their Identifying Features

  4. Fir - Wikipedia

  5. 14 Different Types of Fir Trees (With Pictures) | House Grail

  6. How to Identify 8 Common North American Fir Trees - Treehugger

  7. Fir Tree: Majestic Evergreens with Ecological Importance