The National elementary principal.

v.2 Jul 1923; v.5 (1925/26); v.6 (1926/27); v.6 Apr 1927; v.7 Apr 1928; v.8 (1928/29); v.9 (1929/30); v.9 Apr 1930; v.10 (1930/31); v.11 (1931/32); v.12 1932-1933; v.12 (1932/33); v.12-13 1932/34; v.13 1933-1934; v.13 (1933/34); v.13 Jun 1934; v.14 1934-1935; v.14 (1934/35); v.14 Jul 1935; v.14-15 1934/36; v.15 1935-1936; v.15 (1935/36); v.16 1936-1937; v.16 (1936/37); v.16 Jul 1937; v.16-17 1936/38; v.17 1937-1938; v.17 (1937/38); v.18 1938-1939; v.18 (1938/39); v.18 Jul 1939; v.19 1939-1940; v.19 (1939/40); v.20 1940-1941; v.20 (1940/41); v.21; v.22 1942-1943; v.22 (1942/43); v.23 1943-1944; v.23 (1943/44); v.24 1944-1945; v.24-25 (1944/45-1945/46); v.25 1945-1946; v.26 1946-1947; v.26-27 (1946/47-1947/48); v.27 1947-1948; v.28 1948-1949; v.28 1948-49; v.29 1949-1950; v.29 1949-50; v.30 1950-1951; v.30 1950-51; v.32:2-6; v.33:2-6; v.34:2-7; v.34:1 1951; v.30-31 yr.1950-52; v.31 1951-52; v.32:1 1952; v.33:1 1953; v.32-33 yr.1952-54; v.35:2-7; v.35:1 1955; v.34-35 yr.1954-56; v.36:2-7; v.36:1 1956; v.36-37 yr.1956-58; v.37 1957-58; v.38 1958-59; v.39 1959-60; v.40:2-7; v.40:1 1960; v.41:1-2; v.41:4-7; v.41:3 1961; v.41-42 1961/63; v.42 1962-63; v.44 1964-65; v.45; v.46; v.49 (1969-70); v.50:1 (1970-71); v.50:2 (1971); index v. 32:2-V.36