A. Humic coals
B. Liptobiolites
C. Sapropelic coals
D. None of these
Correct Answer: Sapropelic coals ✔
Last Updated: March 08, 2019
A. Humic coals
B. Liptobiolites
C. Sapropelic coals
D. None of these
Correct Answer: Sapropelic coals ✔
Last Updated: March 08, 2019