Nielsen, Leon (Nombre personal)

Chemical immobilization in urban animal control work, 1982 : portada (Leon Nielsen (autor))

His Arkham House books, 2004: ECIP t.p. (Leon Nielsen) data view (b. Apr. 26, 1937)

Phone call to author, June 28, 2004 (author of Chemical immobilization ...; former wildlife biologist)

Chemical immobilization of wild and exotic animals, 1999 : portada (Leon Nielsen (autor))

Chemical immobilization of north american wildlife, 1982 : portada (L. Nielsen (ed. ))

VIAF, sitio web, 22 marzo 2022 : (punto de acceso: Nielsen, Leon) http://viaf.org/viaf/59256216