Mining Engineers' Handbook: In Two Volumes, Volume 2Robert Peele, John A. Church, John Wiley & Sons, Chapman and Hall (Londyn). John Wiley & Sons, Incorporated, 1956 |
Mining Engineers' Handbook: In Two Volumes, Volume 2Robert Peele, John A. Church, John Wiley & Sons, Chapman and Hall (Londyn). John Wiley & Sons, Incorporated, 1956 |