scientific article published in October 1972

scientific article published in September 1952

scientific article published in August 1980

scholarly article

scientific article published in 1963

scientific article published in 1982

scientific article published in 1985

scientific article published in June 1980

scientific article published in June 1980

article published in 1983

scientific article published in 1954

scientific article published in 1954

article published in 1986

scholarly article

scientific article published in 1950

scientific article published in November 1971

scientific article published in November 1976

scientific publication

article by J.R. Vockeroth published November 1966 in The Canadian Entomologist

scientific article published in 1952

doctoral thesis

scientific article published in 1995