Humic substances in soil and crop sciences : selected readings : proceedings of a symposium cosponsored by the International Humic Substances Society ... Chicago, Illinois, 2 December 1985
editors, P. MacCarthy ... [et al.].
Madison, Wis., USA : American Society of Agronomy : Soil Science Society of America, 1990.
xvii, 281 págs. : ilustraciones ; 24 cm.
ISBN: 0891181040
Incluye referencias bibliográficas e índice.