book

article published in 1970

article published in 1968

scientific article published in 1987

scientific article published in 1959

scientific article published in 1959

scholarly article by Villy Aellen published 1954 in Revue Suisse de Zoologie

scientific article published in 1990

scientific article published in 1986

scientific article published in 1955

scientific article published in 1952

scientific article published in 1964

scientific article published in 1957

scholarly article by Henri Heim de Balsac & Villy Aellen published 1965 in Revue Suisse de Zoologie

scientific article published in 1979

scientific article published in 1979

scholarly article by Villy Aellen published 1965 in Revue Suisse de Zoologie

scholarly article by Henri Heim de Balsac & Villy Aellen published 1958 in Revue Suisse de Zoologie

scientific article published in 1949

scientific article published in 1978

scientific article published in 1963

scientific article published in 1956

scientific article published in 1956

scientific article published in 1953

scientific article published in 1966

scientific article published in 1960

scientific article published in 1962

scientific article published in 1993

article

article

scientific article published in 1997

scientific article published in 1953

scientific article published in 1950

obituary published in the Revue suisse de Zoologie