Smith, Keith A. Soil analysis : instrumental techniques and related procedures - New York : Marcel Dekker, 1983 - 562 p. ilus. ; gráfs. - Books in soils and the environment . - Books in soils and the environment . LCCN: 65566 Subjects--Topical Terms: Suelos--Análisis.Suelos--Laboratorios. Dewey Class. No.: 631.42 / S5