Authors
R.H. Økland
Botanical Museum, Univ. of Oslo, Norwegian Institute of Land Inventory, Oslo
T. Økland
Norwegian Institute of Land Inventory, Department of Biology, Division of Botany and Plant Physiology, University of Oslo, Norwegian Institute of Land Inventory, Oslo
K. Rydgren
Norwegian Institute of Land Inventory, Department of Biology, Division of Botany and Plant Physiology, University of Oslo, Norwegian Institute of Land Inventory, Oslo