(1)
Trani, P.; Haag, H.; Sarruge, J.; Dechen, A.; Catani, C. Absorption and Nutrient Concentration in Apple (Pyrus Mains L.) . An. Esc. Super. Agr. Luiz de Queiroz 1981, 38 (1), 387-396. https://doi.org/10.1590/S0071-12761981000100033.