Proceedings, Sixth Bird Control Seminar, Bowling Green State University, Bowling Green, Ohio, 30-31 October-1 November, 1973 / sponsored by the Environmental Studies Center, Bowling Green State University, with the assistance of Bureau of Sport Fisheries and Wildlife, United States Fish and Wildlife Service and National Pest Control Association, Elizabeth, New Jersey ; William B. Jackson, conference chairman ; Harold N. Cones, Jr., conference assistant ; Harold N. Cones, Jr. and William B. Jackson, editors.