TY - JOUR T1 - A study of a population of the house martin (Delichon urbica (L.)) feather louse BrĂ¼elia gracilis (Mallophaga: Ischnocera) in Lincolnshire, UK JF - Entomologist Y1 - 1994 A1 - Clark,Frank A1 - Farrel,J. A1 - L. A. Hill SP - 198 EP - 204 VL - 113 ER -