scientific article published in 1950

scholarly article in Proceedings of the Malacological Society of London, vol. 33 no. 5, November 1959

scientific article published in 1960

scientific article published on 14 July 1961

scholarly article published by Patricia Marjorie Ralph in 1961

scientific article published in 1956

scientific article published in 1957

scientific article published in 1944

scientific article published in 1943

scientific article published in 1943

scientific article published in 1946

scientific article published in 1956