MLA

Duncan, Catherine G. (Catherine Gross), 1908-1968. Soil-block and Agar-block Techniques for Evaluation of Oil-type Wood Preservatives : Creosote, Copper Naphthenate, and Pentachlorophenol. : Beltsville, Md. : United States Dept. of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, Division of Forest Pathology, 1953.