其他書名 | Progress Report 6 : Relative Advantages and Disadvantages of Different Types of Stemming and No Stemming when Used with 40 Percent Ammonia Gelatin Dynamite at the Mount Weather Testing Adit |
出版 | U.S. Department of the Interior, Bureau of Mines, 1943 |
URL | http://books.google.com.hk/books?id=0WHuKK42jiMC&hl=&source=gbs_api |
EBook | FULL_PUBLIC_DOMAIN |