Ammonia volatilization in soil treated with tannery sludge - Martines, A. M; Nogueira, M. A; Santos, C. A; Nakatani, A. S; Andrade, C. A; Coscione, A. R; Cantarella, H.; Sousa, J. P; Cardoso, Elke Jurandy Bran Nogueira (Bioresource Technology, 2010)