TY - BOOK AU - Kellogg,Charles E. TI - Development and significance of the great soil groups of the United States T2 - Miscellaneous publication / United States Department of Agriculture AV - S599.U5 K4 PY - 1936/// CY - Washington, D.C. PB - U.S. Dept. of Agriculture KW - Soils KW - United States KW - Soil formation N1 - Caption title; Contribution from Bureau of Chemistry and Soils; Bibliography: p. 39-40 ER -