Mello, F. de A. de; Silveira, R. I.; Arzolla, S.; Hellmeister, S. R. Effects of Organic Matter on the Moisture Retention Capacity of Four Soils of the Piracicaba Municipality, State of São Paulo, Brasil . An. Esc. Super. Agr. Luiz de Queiroz 1978, 35, 45-50. https://doi.org/10.1590/S0071-12761978000100004.