Lal, Rattan Assessment methods for soil carbon /ed. by R. Lal (and others) - Boca Ratón : Lewis, 2001. - 676 p. : ilus. ISBN: 1566704618 LCCN: 89537 Subjects--Topical Terms: Suelos--Carbón en.Suelos--Materia orgánica. Dewey Class. No.: 631.4 / L3