Cavalcanti, Francisco José de Albuquerque, and Francisco de Assis Ferraz de Mello. “ Factors That Interfere With Phosphorus Fixation: I - Incubation Period ”. Anais Da Escola Superior De Agricultura Luiz De Queiroz, vol. 34, Jan. 1977, pp. 445-5, https://doi.org/10.1590/S0071-12761977000100033.