North Frisian Islands

augmented generating funciton chromic iron differential culculus eastaway fertilization membrane financial hardship grassland degeneration gray matter (or gray nerve substance) hammershears low-noise and low vibration electric machine Lungsjön make an experiment on metalworking vise multi-stacks phase-angle regulator phthalanic acid pure repeating decimal Seidelin bodies super-oil tank ship zianite (kyanite)