Vol 1, no 5 (August 1947); Vol 2, no 2 (April 1948) - Vol 2, no 9 (December 1948); Vol 3, no 1 (February 1949) - Vol 3, no 5 (August 1949); Vol 3, no 7 (November 1949) - Vol 3, no 8 (December 1949); vol 4, no 1 (March 1950) - Vol 4, no 4 (June 1950) Vol 4, no 6 (September 1950) - Vol 4, no 7 (December 1950); Vol 5, no 1 (March 1951) - Vol 5, no 6 (December 1951); Vol 6, no 1 (March 1952); Vol 6, no 4 (June 1952) - Vol 6, no 6 (September 1952) Vol 7, no 1 (March 1953) Vol 9, no 1 (March 1955) Vol 11, no 1 (April 1957) Vol 12, no 2 (April 1958) Vol 13, no 1 (April 1959) Vol 14, no 1 (April 1960)