European Journal of Agronomy
European Journal of Agronomy > 1997 > 7 > 1-3 > 161-169
European Journal of Agronomy > 1997 > 7 > 1-3 > 43-52
European Journal of Agronomy > 1997 > 7 > 1-3 > 75-88
European Journal of Agronomy > 1997 > 7 > 1-3 > 89-98