title: Identification keys to strongylid nematode parasites of equids. Preface.
authors.affiliation: US Department of Agriculture, The Henry A. Wallace Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Agricultural Research Service, Building 1180, BARC East, Beltsville, Maryland 20705, United States. 2jrcgl@gmail.com
authors.forename: J Ralph
authors.initials: JR
authors.lastname: Lichtenfels
mesh_terms: D000818:Animals; D006736:Horses; D013319:Strongyle Infections, Equine / Q000469:parasitology*; D013320:Strongyloidea / Q000145:classification*