Six-gun champion /

著者: Langley, John
出版事項 1964

Heir to bar 60 /

著者: Langley, John
出版事項 1961

Six-gun vengeance /

著者: Langley, John
出版事項 1966

Six-gun citadel /

著者: Langley, John
出版事項 1964

Six-gun feud /

著者: Langley, John
出版事項 1959

Riders of red range /

著者: Langley, John
出版事項 1955

Six-gun justice /

著者: Langley, John
出版事項 1961

Rustler's brand /

著者: Langley, John
出版事項 1954

The Badlands Gang /

著者: Langley, John
出版事項 1970

Summary of a survey of the Safety Supervisor Scheme / J.D. Langley, G.W. McKinnon ; [edited by D.G. Miller], Building Research Association of New Zealand.

著者: Langley, John D.