Soil phosphorus fractions in calcareous vertisols and aridisols of northern Jordan
By: al-Rawajfah, Zahir Ali; Khurays, Saib Abd al-Halim; Rayyan, John. Jordan Journal of Agricultural Sciences. Vol. 6, no. 3 (Sep. 2010), pp.411-422, 12 p.
Subjects: Calcareous soils; Jordan