TY  - BOOK
ED  - United States.
TI  - Keys to Soil Taxonomy
U1  - SOI 23
PY  - 1994///
CY  - [Washington, D.C.]
PB  - United States Dept. of Agriculture, Soil Conservation Service
KW  - Soils
KW  - Classification
N1  - "This volume includes all revisions of the keys that have so far been approved, replacing the original keys in Soil taxonomy, a basic system of soil classification ... (1975), the work on which this abridged version, first published 1983 is based"--P. ii; Includes index; Includes bibliographical references
ER  -