104455019PersonalCAOONL|ncf1002848413Harden, John Hy. (John Henry)CAOONLCAOONL|ncf10028484Harden, John Hy.(John Henry)CAOONLCAOONL|ncf10028484CAOONL|ncf10028484uJohn Hy. HardenCAOONLCAOONL|ncf10028484Canadian Institute for Historical MicroreproductionsCAOONLCAOONL|ncf1002848400lived187188189190191192193194195196197198amCAOONLCAOONL|ncf100284849780665053566CAOONLCAOONL|ncf10028484USCAOONLCAOONL|ncf10028484CAOONLCAOONL|ncf10028484Harden's patent adjustable drawing-board trestle.CAOONLCAOONL|ncf10028484Rock-salt deposit of Huron and Bruce Counties, Ontario, Canada : abstract from a paper2024-01-21T20:56:33.894238+00:00