The official Field Book for Describing and Sampling Soils Version 3 – National Soil Survey Center/NRCS publication (2012) is available for download for free at the following link: https://nrcspad.sc.egov.usda.gov/DistributionCenter/product.aspx?ProductID=991 .
Society of Soil Scientists of Northern New England
A non-profit professional organization dedicated to the advancement of soil science.
Society of Soil Scientists of Northern New England 