(1)
Daza, A.; Santamaría, C.; Camacho, M.; Rodríguez-Navarro, D. N.; Temprano, F. Short Communication. Influence of Micronutrients on Biological Nitrogen Fixation in Bean (Phaseolus Vulgaris L.) under Greenhouse Hydroponic Culture Conditions. Span. j. agric. res. 2003, 1, 77-80.