"Ralph Harvey" . "Ralph H. Hopp" . "2003" . "Harvey"@en . . . "Ralph"@en . . "1915" . "Ralph H." . . "Ralph Harvey Hopp" . "H." . . "Ralph H. Hopp" . "Hopp"@en . "Hopp, Ralph H. (Ralph Harvey)" . "Ralph Harvey Hopp"@en . . .