PRESENT ISTHMIAN CANAL COMMISSION, UNDER WHOSE DIRECTION THE ECLIPSING OF ALL RECORDS FOR EARTH AND ROCK EXCAVATION OCCURRED IN DECEMBER, 1907, AND AGAIN IN JANUARY, 1908. |
PRESENT ISTHMIAN CANAL COMMISSION, UNDER WHOSE DIRECTION THE ECLIPSING OF ALL RECORDS FOR EARTH AND ROCK EXCAVATION OCCURRED IN DECEMBER, 1907, AND AGAIN IN JANUARY, 1908. |