1. Soil survey laboratory memorandum. 1. Field and laboratory data on some podzol, brown podzolic, brown forest, and gray wooded soils in northern United States and southern Canada; [prepared by Divisions of Soil Survey and Soil Management and Irrigation Agriculture]. Bookmark Corporate/Agency Authors: Plant Industry, Soils, and Agricultural Engineering Bureau and Agriculture Dept. Publisher: Plant Industry, Soils, and Agricultural Engineering Bureau Date: [1952.] SuDoc number: A 77.525:1