Fate of 15N applied as ammonium sulphate to a bean crop - Cervellini, Admar; Ruschel, Alaides Puppin; Matsui, Eiichi; Salati, Eneas; Zagatto, Elias Ayres Guidetti; Ferreira, H. F; Krug, Francisco José; Bergamin Filho, Henrique; Reichardt, Klaus; Meirelles, Nelson Morato Ferraz; Libardi, Paulo Leonel; Victoria, Reynaldo Luiz; et al. (Communications of the International Atomic Energy Agency, 1980)