TY - JOUR AN - 7 AU - De Graaf,M..C..C.. AU - Verbeek,P..J..M.. AU - Bobbink,R.. AU - Roelofs,J..G..M.. TI - Restoration of species-rich dry heaths: the importance of appropriate soil conditions. JO - Acta Botanica Neerlandica PY - (1998) VL - 47 SP - 89-113 M2 - 89 ER -