| 其他書名 | Banded Ingredients of No. 6 Coal and Their Heating Values as Related to Washability Characteristics and Preliminary Report on Unit Coal-specific Gravity Curves of Illinois Coals |
| 出版 | 1934 |
| URL | http://books.google.com.hk/books?id=6Oj5PmA66t0C&hl=&source=gbs_api |