The field and laboratory standard for classifying soil color. 2000 Edition contains 322 colors on 9 charts of hues 10R, 2.5YR, 5YR, 7.5YR, 10YR, 2.5Y, 5Y, and two Gley charts for submerged soils. Each 7 ¼" x 4 ¼" chart has apertures for viewing the sample directly against colors on the chart. Charts are held in a pocket-sized loose leaf binder. Availability: Contact us for availability. MC-01$112.00 For information on our full line of geology, geophysical and GPS mapping products, please visit our ASC Scientific main Website at www.ascscientific.com