scientific article published on 01 July 1972

scientific article published on 01 February 1969

scientific article published on January 1, 1972

scientific article published on April 12, 1976

scientific article published on April 5, 1976

scientific article published on 01 December 1967

scientific article published on 01 October 1968

scientific article published on April 21, 1975

scientific article published on 01 October 1967

scientific article published on 01 October 1963

scientific article published in December 1970

scientific article published on 01 October 1965

scientific article published in January 1972

scientific article published on April 28, 1975

scientific article published on 01 January 1969

scientific article published on January 1, 1973

scientific article published on 01 October 1977

scientific article published on 01 January 1969

scientific article published on 01 September 1968

scientific article published on 01 January 1969

scientific article published on January 1, 1973

scientific article published on 01 October 1966

scientific article published on October 1, 1971

scientific article published on 01 January 1969

scientific article published on 01 February 1972

scientific article published on 01 April 1968

scientific article published on 01 April 1968

scientific article published on 01 May 1969

scientific article published on 01 November 1972

scientific article published on 01 January 1960

scientific article published on 01 January 1966

scientific article published on 01 August 1976

scientific article published on 01 July 1976

scientific article published on 01 August 1967

scientific article published on 01 January 1957

scientific article published on 01 January 1955

scientific article published on 01 November 1972

scientific article published on 01 November 1952

scientific article published on 01 November 1952

scientific article published on 01 March 1966

scientific article published on 01 March 1966

scientific article published on 01 November 1972