. "The Ruston Hornsby APR type is a range of single cylinder water cooled stationary engines built by Ruston Hornsby of Lincoln, England."@en . . . . "Ruston Hornsby APR type engine"@en . . . "The Ruston Hornsby APR type is a range of single cylinder water cooled stationary engines built by Ruston Hornsby of Lincoln, England."@en . .