scientific article published in 1967

scientific article published in 1981

scientific article published in 1966

scientific article published in 1981

scientific article published in 1984

scientific article published in 1966

scientific article published in 1964

scientific article published in 1978

scientific article published in 1978

scientific article published in 1978

scientific article published in 1973

scientific article published in 1987

scientific article published in 1988

scientific article published in 1973

scientific article published in 1971

scientific article published in 1972

scientific article published in 1982

scientific article published in 1986

scientific article published in 1983

scientific article published in 1970

scientific article published in 1985

scientific article published in 1966

scientific article published in 1969

scientific article published in 1966

scientific article published in 1966

scientific article

scientific article published in 1955

scientific article published in 1963

scientific article published in 1987

scientific article published in 1966

scientific article published in 1988

scientific article published in 1983

scientific article published in 1967

scientific article published in 1967

scientific article published in 1952

scientific article published in 1995

scientific article published in 1993

scientific article published in 1990

scientific article published in 1988

scientific article published in 1922

scientific article published in 1991

scientific article published in 1990

scientific article published in 1989

scientific article published in 1959

scientific article published in 1995

scientific article published in 1952

scientific article published in 1972

article by L. L. Forman et al published 1968 in Kew Bulletin

scientific article published in 1978

scientific article published in 1975

scientific article published in 1960

scientific article published in 1977

scientific article (publication date: November 1992)