Coppen, J. J. W., Smith, A. E., & Greenhalgh, P. A. L. (1984). Gum naval stores: An industrial profile of turpentine and rosin production from pine resin. Tropical Development and Research Institute.
Citace podle Chicago (17th ed.)Coppen, J. J. W., A. E. Smith, a P. A. L. Greenhalgh. Gum Naval Stores: An Industrial Profile of Turpentine and Rosin Production from Pine Resin. London: Tropical Development and Research Institute, 1984.
Citace podle MLA (8th ed.)Coppen, J. J. W., et al. Gum Naval Stores: An Industrial Profile of Turpentine and Rosin Production from Pine Resin. Tropical Development and Research Institute, 1984.
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