AN ELEMENTARY AND PRACTICAL TREATISE ON BRIDGE BUILDING, AN ENLARGED AND IMPROVED EDITION. OF THE AUTHOR'S ORIGINAL WORK, BY S. WHIPPLE, C. E. ALBANY, N. Y. INVENTOR OF THE WHIPPLE BRIDGES, &C. SECOND EDITION, REVISED AND ENLARGED. NEW YORK: D. VAN NOSTRAND COMPANY, PUBLISHERS 1899. |