Geological Survey bulletin.

no.1-2; no.1-6 text 1907-1909; no.1-5 (1907-09); no.3; no.4-5; no.6; no.7; no.8; no.8-11 text 1910-1911; no.8-10 (1910-11); no.8-10 1910-1911; c.1 no.8-10 1910-11; no.9; no.10-12; no.11-14 (1911-13); no.12-16 text 1911-1914; no.14-15; no.15-18 1914; no.17-18 1914; no.15-19 (1914-15); c.1 no.17-19 1914-15; no.19; no.22-24 (1915); no.19-21 text 1915-1916; no.20-21 (1915-16); no.20-22 1915-1916; c.1 no.23-25 1915-16; no.22-28 text 1915-1918; no.23-27 1915-1918; no.25-30 (1916-19); no.30 1919; no.28-32 1918-1921; no.29-32 1919-1921; no.31-33 (1919-23); no.33-34 1923; no.33 1923; no.34 1923; no.33-36 1923-1925; no.35-38 text 1925-1928; no.38-40 (1928-29); no.38-41 1928-1935; no.39; no.42-44 1935-1938; no.45-50; no.45 1958; no.46-50; no.46-48 1959-1966; no.49 1967; no.50 1967; no.50-54 1967-1972; no.51-54; no.51-54 1971-1972; no.55-57 (1977-79); no.55-58 1977-1979; no.58-60 (1979-81); no.59-60 1983, 1981; no.59-61 1982-1983; no.61-62 1982-1986; no.61-63 (1982-88); no.62-63 1986-1988; no.63-66 1988-1989; no.64-66 1989-1991; no.67-70 1992-1993