1. Phosphate pools, phosphate transport and phosphate availability;Bieleski;Ann. Rev. Plant Physiology,1973
2. “The Nature and Properties of Soils”;Brady,1974
3. “The Plant Root and Its Environment”;Carson,1974
4. “Soil Chemical Analysis”;Jackson,1970
5. Ionic balance in different tissues of the tomato plant in relation to nitrate, urea, and ammonium nutrition;Kirby;Plant Phys.,1967