Webster, R. Quantitative and numerical methods in soil classification and survey / R. Webster. - Oxford ; New York : Clarendon Press, 1977. - x, 269 p. : ill. ; 23 cm. - Monographs on soil survey . Includes bibliographies and indexes. ISBN: 0198545126 : ยน12.50 LCCN: 78-308516 Subjects--Topical Terms: Soil surveys-- Statistical methods.Soils-- Classification-- Statistical methods. Dewey Class. No.: 631.4/7