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barytas Cape porcupines Celtis sinensis dambos delvauxate(delvauxene) liquid cold-tar creosote non-metallic gasket nuclear research reactor orphenadrines rated heating capacity reactor pipe repture safeguard (device) Riesz transform saadouns Saussurea fastuosa Selenginskiy Rayon Stephens C. symbiotic relationship tank vent valves thornless honey locust viscosity-temperature relation