TY - SER ED - Food and Agriculture Organization of the United Nations. ED - International Society of Soil Science; ED - International Soil Reference and information Centre TI - World reference base for soil resources SN - 92-5-104141-5 SN - 0532-0488 PY - 1998/// CY - Rome PB - Food and Agriculture Organization of the United Nations KW - Soils KW - Classification N1 - Includes bibliographical references (p. 79-81) ER -