Enables quick and easy soil colour evaluations in the field using the widely accepted Munsell colour system. Revised soil chart features the same colors available in previous books plus additional color charts, including a 10Y and 5GY soil chart for glauconite soils, a 5R soil chart for Australia and Southeast Asia, and a 7.5R soil chart for tropical and semi-tropical soils. A Munsell high value, low chroma “white” page shows half steps from 8.5 to 9.5 in value with chromas of 1 and 2 for N, 7.5YR, 10YR, and 2.5Y. Light gray pages decrease sun glare and the color chips are recessed into each water-resistant page to allow dirt and debris to be wiped off easily with less effect on the color chips. 2009 revised edition, 2015 production.