[1]
H. E. P. Martinez, H. P. Haag, and M. L. Moraes, “Micronutrients in <i>Pinus caribaea</i> morelet. III. Corresponding, Fe, Mn and Zn sufficiency and deficiency internal levels”, PAB, vol. 27, no. 9, pp. 1339–1353, Sep. 1992.