scientific article published in September 1939

scientific article published in 1961

scientific article published in 1970

scientific article published in 1971

scientific article published in 1977

scientific article published in 1965

scientific article published in 1957

scientific article

scientific article published in 1957

scientific article published in 1972

scientific article published in 1974

scientific article published in 1957

article

scientific article published in 1957

scientific article published on 27 November 1953

scientific article published in 1957

scientific article

scientific article

scientific article published in 1957

scientific article published in 1950

scholarly article

scientific article published in 1972

scientific article (publication date: March 1971)

scientific article published in 1958

scientific article published in 1970

scientific article

scientific article published in 1934

scientific article published in 1959

scientific article published in 1959

scientific article published in 1955

scientific article published in 1976

scientific article published in 1957

article published in 1976

scholarly article by Paul David Hurd & Earle Gorton Linsley published 1975 in Smithsonian Contributions to Zoology

scientific article published in 1974