Birch-tar

substance (liquid when heated) derived from the dry distillation of the bark of the birch tree

en-GB/ˈbɜːt͡ʃ - tɑːɹ/
en-US/ˈbɝt͡ʃ - ˈtɑɹ/

หมวดหมู่:

organic mattertarpitch