@article{articleedcf7f40, title = {Fractional factorial designs for fertilizer experiments with 25 treatments in poor soils}, author = {Conagin, Armando and Barbin, Décio and Zocchi, Sílvio Sandoval and Demétrio, Clarice Garcia Borges}, year = {2014}, journal = {Revista Brasileira de Biometria} }