Fergusson's percentage unit of angular measurement, with logarithmsJohn Coleman Fergusson · First published 1912Open the Tome
Percentage unit of angular measurement, with logarithmsJohn Coleman Fergusson · First published 1912Open the Tome
Ecclesia antiqua; or, The history of an ancient church (St. Michael's Linlithgow)John Fergusson · First published 1905Open the Tome