Dear Users R, If you use the library agricolae, I would like to have a review to improve my library. Please, You might fill the satisfaction survey and send to email. http://tarwi.lamolina.edu.pe/~fmendiburu/survey.htm Thanks for your response. Felipe de Mendiburu http://tarwi.lamolina.edu.pe/~fmendiburu <http://tarwi.lamolina.edu.pe/~fmendiburu/survey.htm>